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Free, open-source instant messaging and VoIP platform with full Markdown support, voice/video calls, moderation tools, and self-hosting options for communities.

Sending [Line](https://at.line.me/en) notifications using a binary, docker or Drone CI

Lightweight commenting server written in Python and Javascript. It aims to be a drop-in replacement for Disqus

Build your own community space for gaming, chatting, and hanging out with friends worldwide. Customize your environment for the perfect social experience.

Package for building REST/real-time services where clients are synchronized seamlessly, using NATS and Resgate

Anonymously share files, browse and publish _freesites_ (web sites accessible only through Hyphanet) and chat on forums

Secured and decentralized communication system. Offers decentralized chat, forums, messaging, file transfer

Self-Hosted, Twitter™-like Decentralised micro-logging platform. No ads, no tracking, your content, your data

Free Matrix-based messenger with end-to-end encryption, multi-platform bridges, and on-premise deployment. Connect across 30+ networks securely.

Ratus is a RESTful asynchronous task queue server

Software framework for decentralized, peer-to-peer networking

Create a community, where your users can suggest ideas and get questions answered. And have friendly open-ended discussi