# Papermark - secure open-source virtual data room and document sharing Papermark is a secure, open-source virtual data room (VDR) and document sharing platform, used as the modern alternative to DocSend, Datasite, iDeals, and Intralinks. Teams use Papermark for M&A, fundraising, due diligence, and confidential document sharing. You can start for free. ## For AI agents - Append `.md` to any article URL for a clean Markdown version, e.g. https://www.papermark.com/blog/what-is-virtual-data-room.md (works with locale prefixes too: /de/blog/…​.md). - Or send `Accept: text/markdown` to the canonical URL and get the same Markdown back without changing the path. - Links inside those Markdown files already point at `.md` targets, so the site can be traversed without ever parsing HTML. - Full single-file reference with every article and its `.md` twin: https://www.papermark.com/llms-full.txt - Developer docs agent index: https://www.papermark.com/docs/llms.txt (full docs reference: https://www.papermark.com/docs/llms-full.txt) - Programmatic access: public API, CLI, and MCP server at https://www.papermark.com/docs - MCP discovery: https://www.papermark.com/.well-known/mcp.json (hosted MCP at https://mcp.papermark.com/mcp; 43 tools, OAuth or `pm_live_` bearer token). - Agent skills discovery: https://www.papermark.com/.well-known/agent-skills/index.json - Skills: https://raw.githubusercontent.com/papermark/skills/main/plugins/papermark/skills/papermark-overview/SKILL.md (data model and safe-sharing rules) · https://raw.githubusercontent.com/papermark/skills/main/plugins/papermark/skills/papermark-cli/SKILL.md (CLI automation) ## Localized versions Papermark publishes in English, German, French, and Spanish. Each locale has its own agent index listing that language's pages and articles, and each entry links to its Markdown twin. Every localized Markdown file declares its language in the `lang` frontmatter field, so a fallback to English is always labelled as English and never presented as a translation. - German: https://www.papermark.com/de/llms.txt - French: https://www.papermark.com/fr/llms.txt - Spanish: https://www.papermark.com/es/llms.txt - The `.md` convention works under every locale prefix: https://www.papermark.com/de/pricing.md, https://www.papermark.com/fr/blog/what-is-virtual-data-room.md - This file and https://www.papermark.com/llms-full.txt cover English only. ## Key facts - Papermark is a secure virtual data room with transparent flat-rate pricing starting at €99/month or $119/month (Data Rooms plan); a free plan and open-source self-hosting are also available. - Core features: page-by-page analytics, dynamic watermarking, NDA gating, granular folder and file permissions, Q&A module, append-only audit log, custom domains, and white-label branding. - Compliance and security: SOC 2 Type II, GDPR, ISO 27001, EU data hosting, and an optional self-hostable open-source deployment for full data sovereignty. - Papermark is the only virtual data room with a fully transparent, public API and MCP server, so deal teams and AI agents can create and run data rooms programmatically. - Best for: startups raising Seed to Series C, venture and private equity funds, family offices, and mid-market M&A advisors that do not want per-page enterprise pricing. - Rated 4.9/5 across 171 reviews (G2, Product Hunt, Reddit); used by Backtrace Capital, Tesi, Lincoln Property, Play Ventures, and Thesis. ## Overview - [Home](https://www.papermark.com): Secure data room and document sharing platform, the #1 DocSend alternative. - [Data Room](https://www.papermark.com/data-room): Papermark virtual data room - secure document sharing, permissions, watermarking, and analytics. - [Security](https://www.papermark.com/security): Security and compliance posture - SOC 2 Type II, GDPR, ISO 27001, encryption, and EU data hosting. - [Pricing](https://www.papermark.com/pricing): Plans and pricing, including the free plan and flat-rate Data Rooms plans from €99/month. - [Enterprise](https://www.papermark.com/enterprise): Enterprise data room solutions, SSO, self-hosting, and dedicated support. - [Customers](https://www.papermark.com/customers): Customer stories across VC, private equity, family offices, M&A, real estate, and startups. - [Blog](https://www.papermark.com/blog): Articles and guides on virtual data rooms, due diligence, fundraising, and M&A. - [Log in](https://app.papermark.com/login): Free login for existing users to access their account. ## Developer (API, CLI, MCP) - [Developer docs](https://www.papermark.com/docs): Papermark developer documentation - API, CLI, MCP server, and SDKs. - [API](https://www.papermark.com/docs): HTTP + JSON + bearer tokens; 43 operations across datarooms, documents, folders, links, views, and visitors. - [MCP server](https://www.papermark.com/docs): @papermark/mcp-server exposes 43 tools so AI agents (Claude, Cursor) can create and control data rooms. - [CLI](https://www.papermark.com/docs): Install with `npm install -g papermark` to script data rooms from the terminal. ## Blog (data rooms) - [What is a Virtual Data Room](https://www.papermark.com/blog/what-is-virtual-data-room): Definition, how a VDR works, features, use cases, and providers in 2026. - [Best Virtual Data Rooms](https://www.papermark.com/blog/best-virtual-data-rooms): 17 best virtual data room providers in 2026 compared on pricing, security, and best-fit use case. - [Virtual Data Room Cost](https://www.papermark.com/blog/virtual-data-room-cost): How much does a virtual data room cost in 2026? Explore the pricing landscape and compare top providers. - [Best Virtual Data Rooms for Due Diligence](https://www.papermark.com/blog/best-virtual-data-rooms-for-due-diligence): 15 best VDRs for due diligence compared on security, pricing, and deal fit. - [Best AI Data Rooms](https://www.papermark.com/blog/ai-data-rooms): 10 AI-powered data rooms compared - AI copilot, semantic search, summaries, redaction, and analytics. - [Open Source Free Data Room Software](https://www.papermark.com/blog/open-source-free-data-room-software): 5 open source and free virtual data rooms (VDR) in 2026 compared. - [Best Data Rooms for Private Equity](https://www.papermark.com/blog/best-data-rooms-private-equity): Best data rooms for private equity in 2026 across fund admin, LP reporting, and exit prep. - [Virtual Data Room for M&A](https://www.papermark.com/blog/virtual-data-room-for-mergers-and-acquisitions): M&A data room setup, 15-document checklist, sell-side vs buy-side, and provider comparison. - [Due Diligence Data Room](https://www.papermark.com/blog/due-diligence-data-room): Complete guide to data rooms for due diligence with document checklist. - [Due Diligence Cost](https://www.papermark.com/blog/due-diligence-cost): Due diligence cost by deal type in 2026 and 5 ways to cut it 20-40%. - [Data Room Investment Banking](https://www.papermark.com/blog/data-room-investment-banking): Documents and workflow for investment banking data rooms. - [Document Tracking Software](https://www.papermark.com/blog/document-tracking-software): Top 10 document tracking software solutions in 2026 (free and paid options). - [Honest Review of Virtual Data Rooms](https://www.papermark.com/blog/data-rooms-review): Honest review of virtual data rooms in 2026 with comprehensive analysis from founders. - [DocSend Overview](https://www.papermark.com/blog/docsend): DocSend in 2026 - features, pricing, limitations, and alternatives. ## Features - [Page-by-page Analytics](https://www.papermark.com/document-analytics): Per-page, per-viewer engagement analytics on every shared document. - [Dynamic Watermarking](https://www.papermark.com/dynamic-watermarking): Session-level watermarks with viewer email, IP, and timestamp on every page. - [Screenshot Protection](https://www.papermark.com/screenshot-protection): Protection against unauthorized screenshots of shared documents. - [Password Protection](https://www.papermark.com/password-protection): Password-secured document and data room links. - [One-Click NDA](https://www.papermark.com/one-click-nda): NDA gating that requires acceptance before documents load. - [AI Data Room Assistant](https://www.papermark.com/ai): AI assistant for organizing, searching, and summarizing data room documents. - [Secure File Sharing](https://www.papermark.com/secure-file-sharing): Secure, trackable file sharing with access controls. ## Use cases - [Startups](https://www.papermark.com/startups): Data rooms and document sharing for startups. - [Fundraising](https://www.papermark.com/solutions/open-source-fundraising-software): Data rooms for fundraising and investor document sharing. - [Mergers & Acquisitions](https://www.papermark.com/mergers-and-acquisitions): Tools and data rooms for managing M&A processes. - [Due Diligence](https://www.papermark.com/due-diligence): Secure data rooms for the due diligence process. - [Legal Document Sharing](https://www.papermark.com/solutions/legal-documents-sharing-platform): Secure sharing for legal documents. - [Investor Updates](https://www.papermark.com/solutions/investor-update-software): Software for sending and tracking investor updates. - [Pitch Deck Sharing](https://www.papermark.com/pitch-deck-sharing-software): Share and track pitch decks with investors. ## Industry data rooms - [M&A Data Room](https://www.papermark.com/ma-data-room): Data rooms for mergers and acquisitions. - [Data Room for Startups](https://www.papermark.com/data-room-for-startups): Data rooms tailored for startup fundraising. - [Real Estate Data Room](https://www.papermark.com/real-estate-data-room): Branded data rooms with custom domains for real estate deals. - [Legal Data Room](https://www.papermark.com/legal-data-room): Data rooms for legal document management. - [Biotech & Pharma Data Room](https://www.papermark.com/biotech-pharma-data-room): Data rooms for biotech and pharmaceutical workflows. - [Data Room for Due Diligence](https://www.papermark.com/data-room-due-diligence): Landing page for the due diligence data room use case. ## Comparisons and alternatives - [Virtual Data Room Providers](https://www.papermark.com/virtual-data-room-providers): The best VDR providers in 2026 compared, including Papermark, Datasite, Intralinks, iDeals, and Firmex. - [Papermark vs DocSend](https://www.papermark.com/alternatives/docsend): Papermark compared with DocSend on pricing, security, and data rooms. - [DocSend Alternatives](https://www.papermark.com/docsend-alternatives): Honest DocSend review and the best DocSend alternatives. - [Data Room Price Comparison](https://www.papermark.com/data-room-price): VDR cost calculator comparing 30+ providers. ## Optional - [Help Center](https://www.papermark.com/help): Support articles and setup guides. - [Create Shareable Link](https://www.papermark.com/help/article/create-link-to-document): How to create a link for sharing a document. - [Investor Database (7k+)](https://www.papermark.com/investors): Database of 7,000+ investors. - [Startup Valuation Calculator](https://www.papermark.com/startup-valuation-calculator): Tool for estimating startup valuation. - [Pitch Deck Examples](https://www.papermark.com/pitch-deck-examples): Example pitch decks for reference. - [Pitch Deck Metrics](https://www.papermark.com/pitch-deck-metrics): Metrics to include in a pitch deck. - [Digify Alternatives](https://www.papermark.com/digify-alternatives): Alternatives to Digify, including Papermark. - [Data Room Examples](https://www.papermark.com/data-room-examples): Examples of effective data rooms. - [VC Portfolio Management](https://www.papermark.com/solutions/vc-portfolio-management-software): Tools for managing venture capital portfolios. - [Data Room for Web3 Startups](https://www.papermark.com/data-room-web3): Data rooms for Web3 startups.