Peergos

Peergos is a secure, open source platform that combines cloud storage with a private social network. It encrypts all your files and messages on your device before they leave, so only you and the people you choose can access them. The system uses a content-addressed structure built on IPFS, which means your data is stored across a peer-to-peer network rather than on a single company's servers.

You can upload and sync files from any device with a web browser or command line client. It supports sharing folders with granular permissions, version history for every file, and a built-in calendar and todo list. Peergos also includes a fully encrypted social feed where you can post updates and share files with friends. The software runs on Linux, macOS, and Windows, and you can self-host your own Peergos server or use one of the public gateways.

This tool is ideal for privacy-conscious individuals, journalists, activists, and anyone who wants to move away from centralized cloud services. Peergos is free software released under the AGPL license, and the project was founded by Dr. Ian Preston and Dr. Aljoscha Meyer. It has been audited by Cure53 and received a positive security review.