Best Open Source Data Security & Privacy Software
Browse 14 production-ready, self-hostable open-source tools in Data Security & Privacy. Eliminate per-seat SaaS costs, retain complete data ownership, and claim $100K+ in startup cloud hosting credits.
Top Open-Source Data Security & Privacy Software Compared
Direct overview of top-ranked solutions by community stars and license
| Tool Name | GitHub Stars | License | Replaces Proprietary | Details |
|---|---|---|---|---|
| Ente | ★ 117,895 | AGPL-3.0 | Google Drive, Google Photos | View Stack → |
| Peergos | ★ 44,047 | AGPL-3.0 | Mega, Dropbox | View Stack → |
| SAMA | ★ 39,499 | GPL-3.0 | Discord, Microsoft Teams | View Stack → |
| Puter | ★ 39,366 | AGPL-3.0 | Google Drive, Mega | View Stack → |
| Tuta | ★ 8,100 | GPL-3.0 | Gmail, Google Workspace | View Stack → |
All 14 Data Security & Privacy Open Source Tools
Ranked by GitHub community stars & active adoption
Ente
AGPL-3.0End-to-end encrypted cloud storage for photos and videos, offering privacy, security, and seamless cross-device syncing.
Peergos
AGPL-3.0A peer-to-peer encrypted filesystem for secure file storage, sharing, and collaboration with end-to-end encryption and user-controlled data.
SAMA
GPL-3.0Open source chat server with end-to-end encryption, clustering support, and comprehensive messaging features for building real-time communication apps
Puter
AGPL-3.0Puter is a cloud-based desktop OS you run in the browser, with built-in apps, file storage, and support for hosting web apps and sites.
Tuta
GPL-3.0Tuta offers encrypted email, calendar and contacts with quantum-resistant security, protecting your privacy without ads or tracking.
Signal
AGPL-3.0Secure messaging app with state-of-the-art encryption, voice/video calls, group chats, and file sharing. No ads, trackers, or data collection.
Cinny
AGPL-3.0Cinny offers a simple, elegant, and secure interface for Matrix-based conversations, protected by end-to-end encryption.
Element
AGPL-3.0Open-source platform for encrypted communication, file sharing, and collaboration based on the Matrix protocol.
Fluxer
AGPL-3.0Free, open-source instant messaging and VoIP platform with full Markdown support, voice/video calls, moderation tools, and self-hosting options for communities.
Mattermost
Open SourceMattermost provides a flexible, open-source platform for secure team collaboration, designed for organizations with strict security and privacy requirements.
Quiet
GPL-3.0Quiet is a peer-to-peer messaging app that syncs messages directly between devices over Tor, with no central server, no phone number required, and no metadata…
Wire
GPL-3.0A comprehensive collaboration platform offering end-to-end encrypted messaging, file sharing, and video calls with enterprise-grade security and compliance…
Stoat
Open SourceSelf-hostable group chat with servers, channels, voice, and moderation tools. No ads, no data mining, built under EU privacy law.
Cryptomator
GPL-3.0Encrypts files and filenames locally before they reach Dropbox, Google Drive, OneDrive, or any other cloud, so only you hold the key.
Frequently Asked Questions: Open Source Data Security & Privacy
What are the best open source Data Security & Privacy tools in 2026?
The highest-ranked open-source software in Data Security & Privacy is Ente with over 117,895 GitHub stars. Other leading tools include Peergos, SAMA, Puter, Tuta. All are vetted for production self-hosting.
Can I self-host Data Security & Privacy open source tools on my own cloud?
Yes. Tools listed in this category support self-hosting via Docker, Docker Compose, Kubernetes, or Helm on AWS, Google Cloud, DigitalOcean, Hetzner, or bare metal with zero per-seat licensing fees.
How can early-stage startups get free cloud credits to host Data Security & Privacy tools?
Founders can claim up to $100,000 in AWS Activate, $350,000 in Google Cloud for Startups, and $1,000 in DigitalOcean credits via Startupbricks Perks (startupbricks.in/perks) to deploy self-hosted stacks at zero infrastructure cost.
What proprietary SaaS does open source Data Security & Privacy software replace?
Open-source tools in this category replace proprietary commercial platforms including Google Drive, Google Photos, Dropbox, Apple Photos, Microsoft OneDrive, Tresorit, Mega, Proton Drive, Resilio Sync, pCloud Encryption. Switching gives your team 100% data custody, security control, and zero recurring seat costs.
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