Best M&A Software in 2026: The Deal Tool Stack by Category

TL;DR: An M&A software stack has about nine layers, and most deal teams need four or five of them. Here is the short version, with prices only where the vendor publishes one.

• Data room, CIM distribution and NDAs: For most M&A deal teams running $1M to $500M processes, Peony (our product) is the pick. Per-buyer NDA-gated links, page-level buyer analytics, AI document Q&A and unlimited e-signatures start on Business at $30 per admin per month; the Data Room plan at $52 adds Visitor Q&A, signed NDAs, dynamic per-viewer watermarks and unlimited rooms (both billed yearly). Viewers are free and unlimited. Datasite and Intralinks remain the quote-based choice for bank-run mega-auctions.
• CRM: Intapp DealCloud for larger firms (quote-based). Affinity publishes $2,000 to $2,700 per user per year, and Attio starts at $35 per user per month billed annually.
• Sourcing and market data: Grata, SourceScrub, PitchBook, S&P Capital IQ Pro and FactSet are all quote-based, which makes this the layer you can't price from a website.
• Diligence and integration: DealRoom prices by the number of deals you run, with unlimited users. Midaxo runs pipeline through integration for corporate development teams.
• AI contract review: Kira (Litera), Luminance and Harvey are quote-based. Peony includes AI document Q&A inside the room from its $30 Business plan.
• E-signature: Dropbox Sign Standard is $17.50 per user per month billed annually. Peony includes unlimited e-signatures from Business.
• What it costs: on published list prices, a 3-person boutique runs CRM, data room and e-signature for about $2,000 to $7,700 a year (our cost table below). Quote-based data and sourcing tools come on top.

I'm Sean Yu, co-founder of Peony. Before Peony I worked in M&A at Nomura, then invested at Backed VC and on the growth-equity and secondaries desk at Target Global, so I've sat on both sides of the data room and kept more buyer trackers in Excel than I'd like to admit. I run Peony, a data room company, which means one layer on this page is ours. I flag it every time it comes up.

This guide maps the M&A software stack by job, not by brand: what each layer does, which two to four tools lead it, what they cost when the vendor publishes a price, and where one tool can honestly cover several layers. It's written for boutique advisors, mid-market banks, PE deal teams and corporate development leads trying to answer one question: what do we actually need to buy, and what can we skip?

How we evaluated: I looked at each tool on five things a deal team feels in a live process: fit for team size (boutique, mid-market advisor, PE or corporate development), how much of the job it covers, pricing transparency, permission and audit controls, and AI features that hold up under diligence. Prices are list prices from each vendor's own pricing page, checked on October 18, 2026. "Quote-based" means the vendor publishes no price, and I don't guess one. Headquarters come from vendors' own legal, privacy or careers pages, or from SEC filings. This is desk research of vendor pricing pages and documentation plus my own deal-side experience, not a hands-on test of every enterprise tool. Peony is our product, so read its entries with that in mind.

Quick picks: which tool should you use for each layer?

Peony is our product, and it is the pick only on the layers it actually does: the data room, CIM distribution and buyer tracking, NDA e-signature, and AI document Q&A inside the room. Every other layer goes to another vendor.

What are the layers of an M&A software stack?

An M&A software stack has nine layers: virtual data room, CRM, deal sourcing, market data, diligence project management, AI contract review, e-signature, CIM distribution and buyer tracking, and post-merger integration, plus an LP portal for private equity firms. Most teams buy them in roughly that order, and very few need all of them at once.

The order you buy them in matters more than the brands. A three-person sell-side boutique needs a CRM, a data room and e-signature before anything else. A PE fund adds market data and sourcing early because origination is the job. A corporate development team often starts with a pipeline-to-integration platform because its deals don't end at signing.

What is the best virtual data room for M&A?

For most M&A deal teams running $1M to $500M processes, the best virtual data room is Peony: one lean team runs the room, the NDA, the CIM distribution and the Q&A on a flat per-admin bill, with viewers free. Datasite and Intralinks are the choice for bank-run, large or cross-border auctions, and iDeals sits between them as a traditional VDR with tiered service.

Peony (our product): best for most mid-market deal teams

• Best for: Most mid-market and lower-mid-market sell-side and buy-side processes ($1M to $500M) where one team runs the room, the NDA, the CIM distribution and the Q&A.
• Pricing: Business $30, Data Room $52 and Deal Team $64 (minimum 4 admins) per admin per month billed yearly; Enterprise is custom. Viewers are free and unlimited: you pay per admin, not per viewer or per data room, with no storage fees on paid plans. See pricing.
• HQ: San Francisco, California.
• Key feature: Per-buyer NDA-gated links with page-level analytics, dynamic per-viewer watermarks, Visitor Q&A, AI document Q&A and unlimited e-signatures in the same room.

Peony has 8,000+ customers in 60+ countries and is trusted by 250+ M&A advisors, including Jefferies and Bank of America. In our State of M&A Data Rooms report (Q2 2026 edition, 334 M&A transactions from $1M to $500M on the Peony platform), the median time from sign-up to first uploaded document was 4 min 19 s. Everyone you speak to on Peony support has M&A experience at elite boutiques or bulge-bracket banks, VC experience, or has raised $1M+ themselves. When to choose Datasite or Intralinks instead: a bank running a 40-bidder global auction that wants a vendor-staffed Q&A desk at mega-deal scale; below that, Peony gives the same deal team the core controls on a flat per-admin bill.

An M&A advisor who chose Peony put the trade-off this way:

"We selected Peony after a serious review focused on the requirements of a disciplined M&A process: multiple buyer groups, tiered permissions, NDA controls, engagement analytics, document security, and responsive transaction support. Peony provides the core functionality, professionalism, and security buyers, investors, advisers, and counsel expect, while remaining simpler and more cost-effective than many legacy VDR platforms. I would be comfortable recommending Peony for M&A mandates (buy- and sell-side) and capital market transactions in the middle market."

Kevan Fight, GreenTech Global Group Advisory (M&A advisor, 35+ years of data room experience)

Datasite

• Best for: Bank-run sell-side processes with many bidder groups, large page counts and cross-border buyers, such as a 40-bidder global auction that needs a vendor-staffed Q&A desk.
• Pricing: Quote-based.
• HQ: Minneapolis, Minnesota (Datasite LLC).
• Key feature: One vendor across the deal. Datasite describes itself as supporting dealmakers "from sourcing to post-close", and its leadership page lists Grata and Ansarada inside the group.

If a bulge-bracket or large mid-market bank is running the auction, you'll probably be in Datasite or Intralinks whether you picked it or not. On those processes, the scale and the bank's familiarity with the platform are worth the premium.

Intralinks

• Best for: Large banks and cross-border transactions where the bank's standard VDR is a given and the process needs managed Q&A support at mega-deal scale.
• Pricing: Quote-based.
• HQ: Boston, Massachusetts; owned by SS&C Technologies since 2018.
• Key feature: An enterprise VDR with structured Q&A and permissioning built around banker-run processes.

iDeals

• Best for: Mid-market to enterprise teams that want a traditional VDR with tiered service levels.
• Pricing: Quote-based on all three plans (Core, Premier and Enterprise). Core covers a single project with five administrators and unlimited users.
• HQ: Offices in London, New York and Hong Kong.
• Key feature: AI-powered redaction and eSignature on Core, AI chat with documents on Premier, and an MCP connector for Claude and Copilot on Enterprise.

Two more rooms belong on a mid-market shortlist. Firmex (Toronto) sells a single-project room or an annual subscription with unlimited projects, both quote-based. Ansarada, now part of Datasite, prices through a quote builder and doesn't bill until the transaction is live, or 90 days after the room is created, whichever comes first. For the full field ranked, see our top 10 virtual data room providers; for rooms ranked by diligence workflow, see best data rooms for due diligence; and for folder structure and staged access, see the M&A data room guide.

What CRM do M&A advisors and PE firms use?

Most M&A advisors and PE firms use Intapp DealCloud once they reach mid-market scale, Affinity for relationship-driven sourcing, and lighter CRMs such as Attio when the team is small. The right pick depends on whether your edge is relationships, process discipline or speed of setup.

Intapp DealCloud

• Best for: Mid-size and large PE firms, investment banks and advisors that want relationship, business development and deal management in one configurable platform.
• Pricing: Quote-based.
• HQ: Palo Alto, California (Intapp).
• Key feature: Intapp positions DealCloud across relationship management, business development, marketing and deal management for capital-markets firms.

Affinity

• Best for: Relationship-driven deal sourcing at PE, VC and advisory firms where "who knows the owner" decides the deal.
• Pricing: Essential $2,000, Scale $2,300 and Advanced $2,700 per user per year, billed annually; Enterprise is custom.
• HQ: San Francisco, California.
• Key feature: Relationship intelligence built from the team's email and calendar activity, so warm paths to a target show up without manual logging.

Attio

• Best for: Boutiques and emerging managers that want a modern CRM they can configure themselves.
• Pricing: Free plan; Plus $35 and Pro $79 per user per month billed annually ($44 and $99 billed monthly); Enterprise is custom.
• HQ: United Kingdom (Attio Limited).
• Key feature: A flexible data model, so a deal pipeline, buyer universe and fund contacts can live as custom objects and lists.

A CRM is not a document tool, and the gap I see most often is the handoff. The CRM knows a buyer is "in diligence"; it doesn't know which pages that buyer read. That signal lives in the data room. On Peony's Deal Team plan, the API (enabled on request) can push room analytics and signed agreements into Salesforce or HubSpot so the deal record shows engagement without anyone re-keying it. For a deeper CRM comparison for small funds, see best CRM for boutique private equity firms.

What are the best deal sourcing tools for M&A?

The best deal sourcing tools for M&A are private-company databases such as Grata and SourceScrub, which find founder-owned targets and build buyer lists that public-market terminals miss. PitchBook, covered in the next section, also doubles as a sourcing tool for many funds.

Grata

• Best for: Middle-market target and buyer lists for PE firms, banks and corporate development teams.
• Pricing: Quote-based.
• HQ: New York, New York; now part of Datasite.
• Key feature: Search and market mapping across private, founder-owned companies.

SourceScrub

• Best for: High-volume outbound origination by PE firms, investment banks and corporate development teams.
• Pricing: Quote-based.
• HQ: San Francisco, California.
• Key feature: Coverage of 16M companies drawn from 220K sources, according to its own site, with AI-assisted research on top.

My honest read: sourcing databases rarely pay back for a three-person sell-side boutique whose mandates come through relationships. They pay back for buy-side teams running thesis-driven outreach, and for sell-side advisors who need a long, defensible buyer list for a broad auction.

Which market data and comps tools do M&A teams use?

M&A teams use PitchBook for private-market deals and valuations, and S&P Capital IQ Pro or FactSet for public comps, company financials and precedent transactions. All three are quote-based.

PitchBook

• Best for: Private-company, deal, fund and investor data for PE, VC and advisory teams.
• Pricing: Quote-based.
• HQ: Seattle, Washington (US headquarters).
• Key feature: Private-market transaction and valuation data used for comps, buyer lists and fundraising research.

S&P Capital IQ Pro

• Best for: Public comps, company financials and precedent transactions at banks and corporate development teams.
• Pricing: Quote-based.
• HQ: New York, New York (S&P Global).
• Key feature: Deep public-company financials with an Office plug-in that feeds models and pitch books.

FactSet

• Best for: Banks and buy-side teams that want comps, estimates and screening in one terminal.
• Pricing: Quote-based.
• HQ: Norwalk, Connecticut.
• Key feature: Integrated financial data and analytics that flow into Excel and PowerPoint.

I won't publish a price range for these. The vendors don't, and quotes vary too much by seat count, modules and contract length for a range to be useful. Most boutiques I know share one seat across the team and add more only when a live mandate needs them.

What is the best software for diligence request lists and deal project management?

DealRoom and Midaxo are the best-known tools for running diligence request lists and workstreams: DealRoom for deal teams running buy-side diligence through integration, Midaxo for corporate development programs. On the sell side, the request list usually lives in the data room's Q&A instead, which is where Peony fits.

DealRoom

• Best for: Buy-side and corporate development teams running request-list-driven diligence through to integration.
• Pricing: Quote-based and priced by the number of deals you run, with unlimited users, no per-document charges and an annual commitment; DealRoom AI for Diligence is a separately priced add-on.
• HQ: Founded in Chicago in 2012 by a founder who ran a boutique M&A practice.
• Key feature: Request lists tied to the documents that answer them, carried forward into post-merger integration.

Midaxo

• Best for: Corporate development teams running a programmatic acquisition pipeline.
• Pricing: Quote-based.
• HQ: Founded in Helsinki, Finland.
• Key feature: One workspace for M&A strategy, pipeline CRM, due diligence and integration, with Outlook, SharePoint and 50+ other integrations.

Peony (our product)

• Best for: Sell-side processes where buyers' diligence questions run as Q&A inside the data room instead of a separate request-list tool.
• Pricing: Visitor Q&A on Data Room ($52 per admin per month billed yearly); assign-an-expert and approve-before-release routing on Deal Team ($64, minimum 4 admins).
• HQ: San Francisco, California.
• Key feature: Question teams that keep each buyer's questions and answers hidden from competing bidders.

If you run the sell side, you probably don't need a separate tracker. In Peony, Visitor Q&A on the Data Room plan lets buyers post questions from inside the room and your team answer once; Deal Team adds assign-an-expert and approve-before-release routing, so a tax question reaches the tax adviser and nothing goes out unreviewed. Index documents numbers every folder and file (1, 1.1, 1.2) so both sides can say "open 2.3" on a call.

What are the best AI due diligence and contract review tools?

The best AI due diligence tools for contract review are Kira (Litera), Luminance and Harvey, typically bought by law firms or in-house legal teams and all priced by quote. They work on documents counsel has already pulled; the newer place for AI is inside the data room itself, where Peony answers questions from the room's own files with page citations.

Kira (Litera)

• Best for: Law firms and legal teams doing high-volume contract review in M&A diligence.
• Pricing: Quote-based.
• HQ: Chicago, Illinois (Litera).
• Key feature: Extracts critical provisions from contracts and answers deal questions across a document set.

Luminance

• Best for: Legal teams that want AI contract review across diligence and day-to-day contracting.
• Pricing: Quote-based.
• HQ: United Kingdom; founded by researchers from the University of Cambridge.
• Key feature: What Luminance calls Contract Intelligence: AI that reads and analyzes contracts across the enterprise.

Harvey

• Best for: Law firms and in-house teams that want a generative-AI assistant across research, drafting and diligence review.
• Pricing: Quote-based.
• HQ: San Francisco, California.
• Key feature: Generative AI customized for legal work.

Peony (our product)

• Best for: Deal teams, and buyer groups you enable it for, asking questions of the data room itself. It is AI document Q&A inside the room, not a replacement for counsel's contract-review tool.
• Pricing: AI document Q&A from Business ($30 per admin per month billed yearly), with 5x the Business usage on Data Room and 10x on Deal Team; connecting your own LLM is on Enterprise (custom).
• HQ: San Francisco, California.
• Key feature: Cited answers from your own files, each linked to the source document and page, so a reviewer can verify rather than trust.

Inside the room, a deal team or buyer can ask "What's the customer concentration?" and get an answer that cites the pages it came from, and the Data Room plan adds AI room generation, which drafts a folder structure from a one-line description of the deal. On Enterprise, you can bring your own LLM (GPT, Claude or Gemini) or connect an MCP tool to a room, and the connected AI gets its own row in the audit log like any other viewer. Peony's LLM providers work under data-handling agreements that prohibit training on customer content. iDeals offers a comparable AI chat on its Premier plan. For a side-by-side on AI inside the room, see best AI data room for M&A due diligence; if the target itself is an AI company, our AI due diligence guide covers what to check.

Which e-signature tools do M&A teams use for NDAs?

For NDAs that gate a deal, the strongest option is e-signature built into the data room, such as Peony's, so the NDA and the documents it protects sit in one audit trail. For firm-wide signing of engagement letters and consents, M&A teams most often use DocuSign or Dropbox Sign.

Peony (our product)

• Best for: Advisors and deal teams that want NDAs signed inside the data room, without a second signing tool or a separate audit trail.
• Pricing: Unlimited e-signatures from Business ($30 per admin per month billed yearly); the signed NDA gate starts on Data Room ($52). Free includes 3 e-signatures a month.
• HQ: San Francisco, California.
• Key feature: Reusable single-signer NDA templates that plug into the data room's NDA gate, with signatures designed to meet US ESIGN Act and EU eIDAS requirements for standard e-signatures.

Peony includes unlimited e-signatures from the Business plan. You drag signature, initials and text fields onto a PDF or DOCX, save reusable NDA templates, and every completed signature is stored with a timestamp, IP address and verification hash. On the Data Room plan, the same engine powers the signed NDA gate, so a buyer signs before the first page of the CIM loads, and the signed copy sits next to the access log.

DocuSign

• Best for: Firm-wide e-signature at banks, law firms and corporates that standardize on one tool.
• Pricing: Self-serve per-user plans listed on DocuSign's site; enterprise plans by quote.
• HQ: San Francisco, California.
• Key feature: The e-signature tool many counterparties and their counsel already use, which removes friction on the other side.

Dropbox Sign

• Best for: Small teams that want a simple signer at a published price.
• Pricing: Essentials $15 per month ($10.05 billed annually) for one user; Standard $25 per user per month ($17.50 billed annually) for 2 to 5 users; Premium by quote.
• HQ: San Francisco, California (Dropbox).
• Key feature: Unlimited signature requests on every plan.

What is the best way to distribute a CIM securely and track buyers?

The best way to distribute a CIM is from a data room, as one NDA-gated link per buyer with dynamic watermarks and page-level analytics, so you can see who read what and revoke access between rounds. Emailing a PDF gives you none of that. On bank-run processes, Datasite and Intralinks handle distribution inside the main room; for everything else, the two tools I see most often are Peony and DocSend.

Peony (our product)

• Best for: Sell-side advisors sending a teaser and CIM to many buyers who need to see who read what, and to cut a buyer off between rounds.
• Pricing: Business $30 and Data Room $52 per admin per month billed yearly. Viewers are free and unlimited, so 40 buyers cost the same as 4.
• HQ: San Francisco, California.
• Key feature: One revocable link per buyer behind an NDA gate, with page-level analytics on every view; signed NDAs and dynamic per-viewer watermarks from the Data Room plan.

Peony is built around this exact workflow. The teaser goes out as a tracked link, the NDA gate sits in front of the CIM, each buyer group gets its own permissions, and dynamic watermarks stamp each viewer's identity on every page. Page-level analytics then tell you something email never did: a buyer that spends most of its time in customer concentration before the IOI deadline is telling you what its first management-meeting question will be. If your model is a live Claude or ChatGPT artifact, Peony renders .html files live with JavaScript running, behind the same NDA gate and analytics (live HTML files don't carry the dynamic watermark, so keep the watermarked PDF version for anything that must be stamped). For drafting the document itself, see how to write a CIM.

DocSend

• Best for: Founders and small teams sharing decks and light data rooms.
• Pricing: Advanced is $250 per month ($150 billed yearly) with 3 users included, and is where data rooms, NDAs and dynamic watermarking start; Advanced Data Rooms is $300 per month ($180 billed yearly), also with 3 users (DocSend pricing).
• HQ: San Francisco, California (part of Dropbox).
• Key feature: Document and video analytics on shared links.

What is the best post-merger integration software?

Midaxo and DealRoom, both covered above, are the best-known dedicated tools that carry diligence findings into post-merger integration, and both are quote-based. Datasite also describes its platform as running through post-close.

Many integration management offices still run the 100-day plan in a general project tool or a spreadsheet, and that works if diligence findings, owners and synergy targets are captured in a structured way before close. The practical test for any PMI tool is whether issues found in diligence become tracked integration tasks without re-keying. On the data room side, Peony's Deal Team plan includes a data-room archive download, and any plan with rooms can duplicate a room's files and folders into a fresh room for the integration team, with groups, links and analytics starting clean. For the integration process itself, see our acquisition integration guide.

What do PE firms use for investor and LP portals?

PE firms most often use Juniper Square or Allvue for investor portals and LP reporting, and both are quote-based. Smaller managers often run fundraising diligence and quarterly LP updates from a data room instead.

Juniper Square

• Best for: GPs that want investor CRM, data rooms, an investor portal and fund administration from one vendor.
• Pricing: Quote-based.
• HQ: San Francisco, California.
• Key feature: What it calls a fund operating system, spanning investor relations, portal reporting and fund administration.

Allvue

• Best for: PE and private-credit managers that need fund accounting, an investor portal and portfolio monitoring together.
• Pricing: Quote-based.
• HQ: Coral Gables, Florida.
• Key feature: Back-office fund accounting connected to an investor portal and portfolio monitoring.

For a full comparison, see best investor portal software.

What does an M&A software stack cost?

On published list prices, the layers you can price from a website (CRM, data room and e-signature) cost about $2,000 to $7,700 a year for a 3-person boutique, $22,700 to $59,700 for a 20-person advisor, and $18,500 to $25,700 for an 8-person PE deal team. The table below is our own framework, built from vendors' published prices; quote-based layers are marked as such rather than estimated.

Assumptions: list prices billed annually, before discounts and tax. CRM seats equal every professional on the team. Data-room admins are the people who build and manage rooms (2, 6 and 4; Deal Team has a 4-admin minimum). Viewers are free on Peony, so the number of buyers doesn't change the figure. The e-signature low end assumes Peony's built-in signing; the high end adds Dropbox Sign Standard, which caps at 5 users before its quote-based Premium plan.

Three things the table shows:

1. CRM seats are the biggest published line, and they scale with headcount. Going from Attio to Affinity moves a 20-person firm's bill by about $35,000 a year, far more than any data room choice.
2. Per-admin data room pricing scales with the people who build rooms, not the buyers who read them. Inviting 40 bidders instead of 4 doesn't change the Peony number. On per-page, per-GB or per-user VDR pricing, it can.
3. The quote-based layers are where budget conversations actually happen. Get written quotes for your exact seat count, modules and contract length before you compare. Our due diligence cost breakdown covers what the advisory and data room side of a deal costs in total.

Which layers can one tool cover?

Peony covers 9 of the 12 jobs in the table below in one tool: the data room, NDA gate, e-signature, CIM and teaser distribution, buyer analytics, diligence Q&A, AI document Q&A, watermarks and screenshot protection, and redaction. Measured against the nine stack layers above, that is three full layers (virtual data room, e-signature, and CIM distribution and buyer tracking) plus the sell-side Q&A part of diligence; CRM, sourcing, market data, AI contract review and PMI still need their own tools. Here is the split, with the plan each piece starts on.

Other vendors consolidate from different starting points. Datasite has grown from the data room outward, with Grata for sourcing and Ansarada in the group. DealRoom combines request lists, a data room and integration under deal-volume pricing. Midaxo runs pipeline CRM, diligence and integration for corporate development. Juniper Square bundles investor CRM, data rooms, an investor portal and fund administration for GPs. iDeals has added eSignature and AI chat to its VDR. The pattern is that suites consolidate around whoever owns the daily workflow, and none of them has replaced the CRM and the data terminal.

My rule of thumb: buy the CRM your partners will actually update, the data room your buyers can open without training, and add the quote-based layers only when a specific mandate or thesis pays for them.

How should you build an M&A stack in 2026?

Build the stack around the layer that carries the most risk for your deals, then add tools only when a live process needs them. Here's how I'd set it up for four common teams:

• 3-person sell-side boutique: Attio or Affinity for the CRM, Peony's Data Room plan for the room, NDA, CIM distribution and e-signature, and one shared PitchBook or Capital IQ Pro seat when a mandate needs comps.
• 20-person mid-market advisor: Affinity or DealCloud for the CRM, Peony Data Room or Deal Team for the firm's own processes, S&P Capital IQ Pro or FactSet for comps, and Grata or SourceScrub for buyer lists. Use Datasite or Intralinks when a co-advising bank requires them.
• PE deal team: DealCloud or Affinity, PitchBook plus Grata or SourceScrub for origination, Peony Deal Team for buy-side and portfolio rooms, Kira, Luminance or Harvey through counsel, and Juniper Square or Allvue for LPs.
• Corporate development: Midaxo or DealRoom for pipeline through integration, Capital IQ Pro or FactSet for comps, and a data room for confirmatory diligence and the integration handoff.

If you want to see how the data room layer feels before committing, Peony's 7-day Data Room trial needs no credit card and never auto-charges (AI features switch on after you upgrade). It's the same product 8,000+ customers run their deals on, and you can compare it against the M&A solution page and plans side by side.

FAQ

What is the best M&A software in 2026?

There is no single best M&A software; most deal teams run five to nine tools. For the data room, CIM distribution and NDA layers, Peony (our product) is the pick for most M&A deal teams: $52 per admin per month billed yearly on Data Room, viewers free. One Peony plan covers per-buyer NDA-gated links, page-level buyer analytics, Visitor Q&A, AI document Q&A and unlimited e-signatures. For the rest of the stack: DealCloud, Affinity or Attio lead CRM, PitchBook and S&P Capital IQ Pro lead market data, Grata and SourceScrub lead sourcing, and Datasite and Intralinks remain the standard rooms for bank-run mega-deals.

What software do M&A advisors use?

For the data room, CIM distribution and NDA layers, our pick is Peony (our product), trusted by 250+ M&A advisors including Jefferies and Bank of America. Around it, advisors typically use a CRM (DealCloud, Affinity or Attio), a market-data terminal (PitchBook, S&P Capital IQ Pro or FactSet) and, at larger firms, a sourcing database such as Grata or SourceScrub to build buyer and target lists. The data room carries the most process risk, because it is where the teaser, CIM, NDA, buyer Q&A and confirmatory diligence all run.

What is the best virtual data room for M&A?

For most M&A deal teams running $1M to $500M processes, Peony (our product) is the strongest fit, at $52 per admin per month billed yearly with viewers free. The Data Room plan includes unlimited rooms and storage, signed NDAs with an audit record, dynamic per-viewer watermarks, granular permissions, Visitor Q&A and AI document Q&A. For bank-run, large or cross-border auctions, Datasite and Intralinks are the standard choice, and both are quote-based. iDeals sits between them as a traditional VDR, and Firmex and Ansarada are further quote-based alternatives.

Which M&A software has integrated data room functionality?

Several M&A platforms bundle a data room with other layers, including DealRoom (diligence and integration), Datasite (with Grata for sourcing) and Juniper Square (fund operations for GPs). Going the other way, Peony is a data room that absorbs the adjacent deal jobs: NDA gating, unlimited e-signatures, per-buyer CIM links with page-level analytics, Visitor Q&A and AI document Q&A. None of them replaces a dedicated CRM or a market-data terminal.

What are the top due diligence tools used by PE firms and corporate advisors?

PE firms and corporate advisors usually combine a virtual data room, a diligence tracker and an AI contract-review tool. Datasite and Intralinks run most large sell-side rooms; DealRoom and Midaxo manage request lists and workstreams for buyers and corporate development; Kira, Luminance and Harvey speed up contract review, usually through counsel. For a buy-side team's own rooms, Peony's Deal Team plan ($64 per admin per month billed yearly, minimum 4 admins) adds advanced redaction and Advanced Q&A routing on top of the Data Room plan.

What are the best deal management tools for large-scale M&A transactions?

For large-scale transactions, the standard deal management tools are Intapp DealCloud for pipeline and relationships, Datasite or Intralinks for the data room, and Midaxo or DealRoom for diligence and integration workstreams. All of them are quote-based. At this scale, the deciding factors are Q&A throughput, bidder-group permissions, audit exports and fit with the bank's or acquirer's existing systems, not the sticker price.

What are the best AI due diligence tools for M&A document analysis?

The leading AI tools for M&A document analysis are Kira (Litera) and Luminance for contract review and Harvey for legal generative AI, all quote-based. Inside the data room, Peony includes AI document Q&A from the Business plan ($30 per admin per month billed yearly), so deal teams and buyers can ask questions of the room's documents, and the Data Room plan adds AI room generation and Index documents. Peony's LLM providers work under data-handling agreements that prohibit training on customer content.

Which M&A tools are best for corporate development teams?

Corporate development teams are best served by a pipeline-to-integration platform such as Midaxo or DealRoom, plus a market-data terminal like PitchBook, S&P Capital IQ Pro or FactSet. Add a sourcing database (Grata or SourceScrub) if the team originates proprietary targets. When the company sells a division, the sell-side banker usually chooses the data room; when it buys, its own team needs rooms for confirmatory diligence and the integration handoff.

What CRM works for PE with document management and data room links?

Most PE firms use Intapp DealCloud or Affinity as the CRM and keep documents in a separate data room linked from each deal record, because CRMs are not built for NDA-gated document sharing. Peony fits that pairing: every buyer or counterparty gets its own link with page-level analytics, and on the Deal Team plan Peony's API (enabled on request) can push room analytics and signed agreements into Salesforce or HubSpot. Affinity publishes pricing from $2,000 per user per year; DealCloud is quote-based.

How much does M&A software cost per year?

On published list prices, a 3-person boutique can run CRM, data room and e-signature for about $2,000 to $7,700 a year, and a 20-person advisor for about $22,700 to $59,700. Those figures use Attio or Affinity for CRM, Peony for the data room and Dropbox Sign where e-signature is bought separately, all billed annually. Market data, sourcing databases, enterprise VDRs and AI contract review are quote-based and come on top.

Is DealCloud worth it for a boutique M&A advisor?

DealCloud is usually more than a 2-10 person boutique needs; it suits larger capital-markets firms that want relationship, business development and deal management in one configurable platform, and pricing is quote-based. Boutiques typically get faster value from Affinity (published from $2,000 per user per year) or Attio (from $35 per user per month billed annually), then revisit DealCloud once the team and pipeline justify an implementation project.

How should you evaluate Datasite or another enterprise VDR for M&A?

Evaluate Datasite or any enterprise VDR on five things: Q&A workflow at your question volume, bidder-group permissions, audit-log exports, pricing basis, and who supports the room during live diligence. Ask for a written quote for your expected duration and volume, because Datasite, Intralinks, iDeals, Firmex and Ansarada do not publish prices. Then price the same process on a per-admin model: on Peony, Data Room is $52 per admin per month billed yearly with viewers free, so cost tracks the people who build the room, not the buyers who read it.

Can one platform replace the whole M&A tech stack?

No single platform covers the full M&A stack today; even the broadest suites still pair with a CRM and a market-data terminal. Consolidation happens at the edges: Datasite now spans sourcing (Grata) through the data room, DealRoom and Midaxo run pipeline through integration, and a modern data room such as Peony absorbs NDA signing, CIM distribution, buyer analytics, Q&A and AI document Q&A. Plan for three to five tools, not one.

What is the best way to distribute a CIM and track buyer engagement?

Send the CIM from a data room as a separate NDA-gated link per buyer, with dynamic watermarks and page-level analytics, rather than as an email attachment. Peony does this on the Data Room plan ($52 per admin per month billed yearly): each buyer signs the NDA inside the link, every page view is logged per viewer, and you can revoke a buyer's access between rounds. DocSend offers NDAs and dynamic watermarking from its Advanced plan ($250 per month, or $150 billed yearly, 3 users included); Datasite and Intralinks handle distribution inside bank-run rooms.

Which e-signature tool should M&A teams use for NDAs?

DocuSign is the firm-wide standard at many banks and law firms, Dropbox Sign is a simpler option at $17.50 per user per month billed annually, and some data rooms include e-signature. Peony includes unlimited e-signatures from the Business plan: you drag signature, initials and text fields onto a PDF or DOCX, save reusable NDA templates, and each signed copy is stored with a timestamp, IP address and verification hash. On the Data Room plan, the same signature engine powers the signed NDA gate on a deal room.

What is the best post-merger integration software?

Midaxo and DealRoom are the best-known dedicated tools that carry diligence findings into post-merger integration, and both are quote-based. Many integration management offices still run the 100-day plan in a general project tool or spreadsheets, which works if diligence findings, owners and synergy targets are captured in a structured way before close. The practical test is whether issues found in diligence become tracked integration tasks without re-keying.

What software do PE firms use for LP reporting and investor portals?

PE firms commonly use Juniper Square or Allvue for investor portals, LP reporting and fund operations, and both are quote-based. Juniper Square bundles investor CRM, data rooms, an investor portal and fund administration; Allvue pairs an investor portal with fund accounting and portfolio monitoring. Smaller managers often run fundraising diligence and quarterly LP updates from a data room instead, where per-LP links and page-level analytics show who actually read the letter.

Is Peony secure enough for M&A due diligence?

Peony is built for M&A diligence and is trusted by 250+ M&A advisors, including Jefferies and Bank of America; it is SOC 2 Type II-ready and ISO 27001-ready, with both audits underway. Documents are encrypted with AES-256 at rest and TLS 1.2 or higher in transit, Peony staff can't open the documents in your room, customer documents aren't used to train AI, and Peony has had no data breach since launch. Enterprise adds SAML SSO, BYOK and EU-region hosting.

Related resources

• Best M&A Data Rooms: folder structure, stage-gate permissions, clean rooms and Q&A workflow from the sell-side chair
• Best Data Rooms for Due Diligence: rooms ranked by diligence workflow, not brand
• Top 10 Virtual Data Room Providers: the general cross-use-case provider ranking
• Best AI Data Room for M&A Due Diligence: where AI inside the room helps and where it doesn't
• Best CRM for Boutique Private Equity Firms: CRM options and pricing for 2-10 person funds
• Due Diligence Cost Breakdown: what diligence costs across advisers and the data room
• State of M&A Data Rooms: our dataset of 334 transactions, including time-to-close and room size
• Best Investor Portal Software: LP portal options for fund managers
• Acquisition Integration Guide: turning diligence findings into the integration plan
• Peony for M&A: how M&A advisors and deal teams use Peony
• Peony pricing: Business, Data Room, Deal Team and Enterprise plans