Open source. Open possibilities.

Rocket.Chat is a secure, open-source communications platform developed in TypeScript, designed for organizations requiring high standards of data protection and customizable team collaboration.

Official Keybase client repository containing the Go core crypto libraries, service, CLI, and cross-platform apps for macOS, Windows, Linux, iOS, and Android built with React Native and Electron, plus packaging and Avro protocol definitions.

PocketRisu is a self-hosted AI roleplay chat platform forked from RisuAI, letting you run a personal server accessible from PC, tablet, and smartphone via web browser.

SillyTavern is a locally installed, open-source frontend for interacting with text generation LLMs, image generation engines, and TTS voice models through a single unified interface.

Flux-Chat is a chat application built with Node.js, Express, ReactJS, Flux, MongoDB, and Gulp. The README covers a demo link, npm-based setup/build/start, gulp watching, deployment, testing with Testem, and configuration files.

AionUi is a free, open-source desktop application that lets AI agents work alongside you on your computer. It supports 20+ CLI agents, built-in office assistants, remote access, and 24/7 scheduled automation.

Self-hosted multi-tenant AI platform combining a polished chat UI with an OpenAI-compatible LLM gateway: multi-provider channel routing with priority and weight-based load balancing, subscription and usage billing, admin dashboard, file parsing, and SearXNG web search.

vtmate is a terminal-based voice AI toolkit featuring ultra-low latency, 41 language support, and integrated TTS/STT. It enables live voice conversations, debates, voice cloning, session exports, and background daemon mode with global shortcuts for seamless AI interaction.

Zulip is an open-source team chat application featuring unique topic-based threading designed for both live and asynchronous communication.

Organizr is a PHP-based web dashboard for HTPC and homelab setups that gathers links to your self-hosted services into a single page of tabs. It supports user groups, guest access, Plex/Emby/LDAP/sFTP logins, theming, iFrames and Docker deployment.

OpenDoubao is an open-source alternative to Doubao Work, using AI Agent chat to generate web frontend/backend apps on the fly. It uses a two-stage architecture: AI generates UI and APIJSON requests in the generation stage, while the steady-state stage executes filtering, sorting, pagination safely, quickly, and stably without an LLM. Write operations require admin approval.

Owncast is an open-source, self-hosted live video streaming and chat server that allows users to maintain full ownership of their content and audience.

Khoj is an open-source, self-hostable personal AI app that connects to local or online LLMs, answers questions from the web and your documents, and supports custom agents, automations and semantic search across browser, desktop, phone and chat clients.

ChatTTS is an open-source text-to-speech model built for dialogue scenarios, supporting English and Chinese with multi-speaker output and fine-grained control over laughter, pauses and prosody.