decentralized

Syncthing is an open-source peer-to-peer file synchronization tool that keeps your files synchronized between multiple devices without requiring a central server. It provides secure, private, and decentralized file sync with end-to-end encryption.

Kubo is the reference implementation of IPFS (InterPlanetary File System), a global, versioned, peer-to-peer filesystem that seeks to connect all computing devices with the same system of files.

SimpleX Chat is the most private and secure messaging platform with no user identifiers, featuring double ratchet E2E encryption and a unique approach to privacy that doesn't require phone numbers or usernames.

Synapse is the reference homeserver implementation for Matrix, an open standard for secure, decentralized, real-time communication across different service providers.

RetroShare is a decentralized, encrypted, peer-to-peer communication platform that creates a network of trust between friends, offering secure file sharing, chat, forums, channels, and mail without relying on central servers.

Tahoe-LAFS is a secure, decentralized, fault-tolerant, peer-to-peer distributed data store and distributed file system with strong security and privacy guarantees.

Pagure is a lightweight, powerful, and flexible git-centric forge with features laying the foundation for federated and decentralized development. Built with Python, it provides a comprehensive platform for Git repository hosting with focus on collaboration and federation.

Syndie is a libre system for operating distributed forums, providing anonymous and secure communication through encrypted, decentralized message syndication.