
Tuta is an email service with a strong focus on security and privacy that lets you encrypt emails, contacts and calendar entries on all your devices.

Tuta is a secure email service with built-in end-to-end encryption that makes protecting your communications easy. It encrypts emails, contacts, and calendar entries across all your devices, enabling you to communicate securely with anyone. Tuta prioritizes security and privacy while maintaining a user-friendly experience for everyday users.
Tuta is designed for privacy-conscious individuals and organizations who want encrypted email without requiring technical expertise. It appeals to users who value security by default and prefer an email service that prioritizes data protection over data collection.

:love_letter: A beautiful, fast and fully open source mail client for Mac, Windows and Linux.

Thunderbird for Android – Open Source Email App for Android (fka K-9 Mail)

All-in-one Mail & Collaboration server. Secure, scalable and fluent in every protocol (IMAP, JMAP, SMTP, CalDAV, CardDAV, WebDAV).

The Roundcube Webmail suite

A p2p, secure file storage, social network and application protocol

Minimalistic web app designed for sending private and secure notes.

A list of Free Software network services and web applications which can be hosted on your own servers

Get up and running with Kimi-K2.5, GLM-5, MiniMax, DeepSeek, gpt-oss, Qwen, Gemma and other models.

Production-ready platform for agentic workflow development.

User-friendly AI Interface (Supports Ollama, OpenAI API, ...)

Virtual whiteboard for sketching hand-drawn like diagrams

JavaScript API for Chrome and Firefox

The world’s fastest framework for building websites.

:house_with_garden: Open source home automation that puts local control and privacy first.

Playwright is a framework for Web Testing and Automation. It allows testing Chromium, Firefox and WebKit with a single API.

Open Source Continuous File Synchronization