Top ENCRYPTION GitHub Repositories & Tools (2026)

Tiny post-quantum encryption for sensitive data. Write-only by design. ML-KEM-768 + X25519 + AES-256-GCM. Please break it.

"rsync for cloud storage" - Google Drive, S3, Dropbox, Backblaze B2, One Drive, Swift, Hubic, Wasabi, Google Cloud Storage, Azure Blob, Azure Files, Yandex Files

Cryptomator for Windows, macOS, and Linux: Secure client-side encryption for your cloud storage, ensuring privacy and control over your data.

Self-hosted private chat: no cloud, no telemetry, no Big Tech. Discord alternative that runs on your own machine.

The Cyber Swiss Army Knife - a web app for encryption, encoding, compression and data analysis

bluetooth mesh chat, IRC vibes

BouncyCastle.NET Cryptography Library (Mirror)

🔑 Free Offline-first Password Manager

Homomorphic Encryption library and applications in Swift

📱iOS private messenger, crypto wallet and light node to Mixin Network

📱 Android private messenger, crypto wallet and light node to Mixin Network

End-to-end encrypted notes, tasks, files, passwords, journal and bookmarks. Keyed by a 12-word BIP-39 phrase: no email, no password, no account to leak. The full client source for web, desktop and mobile is published, along with the encryption (XChaCha20-Poly1305, HKDF-SHA256, Ed25519) and the threat model, so the privacy claims are falsifiable.

ArcaneChat for Android: ⚡ Fast encrypted chats for the family

Omni Browser is a secure, open-source Android browser by RebelRoot. Built on Mozilla GeckoView, it features native WebExtension support, aggressive media stream interception, a private encrypted locker, and on-device machine learning tools.

:closed_lock_with_key: Server API to support End-to-End Encryption

Rings is a structured peer-to-peer network implementation using WebRTC, Chord DHT, and full WebAssembly (WASM) support.

📱 Wire for iOS (iPhone and iPad)

Pairlet (formerly CC Pocket / cc-pocket) — Continue your local AI coding tasks from phone, tablet, or desktop.

A Messaging Layer Security (RFC 9420, MLS) implementation in TypeScript

Privacy-first backups for your Mac, to storage you own.