Best Data Room Software for M&A in 2025

Sep 9, 2025

Mergers and acquisitions demand more than simple file sharing—they require secure data rooms that ensure confidentiality, streamline due diligence, and provide full visibility into document activity. In 2025, the best data room software goes beyond storage by offering AI-driven organization, branded presentation, analytics, and eSignature tools. Here are the top data room software options for M&A in 2025, with one clear leader.

1. Peony

Website: https://peony.ink

Peony is the best data room software for M&A in 2025, built for businesses that want clarity, speed, and professionalism during complex transactions. Its standout features include:

  • AI-powered file organization that automatically sorts and maintains due diligence documents.

  • Branded data rooms that create polished, professional investor and buyer experiences.

  • Engagement analytics to reveal which documents buyers are reviewing most.

  • AI-powered eSignature workflows for secure and efficient deal completion.

  • Advanced permission controls to ensure sensitive files are only seen by the right parties.

For M&A deals where every detail matters, Peony delivers unmatched intelligence and control.

2. iDeals Virtual Data Rooms

A global leader in M&A data rooms, iDeals is trusted by investment banks and enterprises for its compliance-first design and user-friendly experience.

3. Intralinks

Intralinks has long been the go-to platform for complex, high-value transactions. It offers strong compliance, scalability, and deal lifecycle management.

4. Datasite

Datasite (formerly Merrill Datasite) is a powerhouse in M&A, providing advanced analytics, reporting, and secure collaboration for large institutional transactions.

5. FirmRoom

FirmRoom is a lightweight, intuitive option focused on efficiency, making it a great fit for small to mid-sized M&A teams.

6. Ansarada

Ansarada offers AI-enhanced due diligence and deal readiness tools, helping companies prepare for and execute M&A with greater insight.

7. DealRoom

DealRoom combines project management with data room functionality, streamlining collaboration between teams during mergers and acquisitions.

8. CapLinked

CapLinked provides secure file sharing and customizable permissions, serving startups, VCs, and corporations in M&A and fundraising deals.

9. SecureDocs

SecureDocs is simple, affordable, and effective—ideal for smaller businesses entering M&A without needing complex enterprise features.

10. Box

Box isn’t a traditional M&A-focused VDR, but it offers compliance, collaboration, and integrations that can support corporate transactions in regulated industries.

Final Word

M&A deals require precision, speed, and trust. While many providers deliver strong features, Peony stands out as the #1 data room software for M&A in 2025, offering AI-driven organization, investor-ready presentation, engagement analytics, and AI-powered eSignatures—all in one secure, modern platform.