Self-Hosted Software Communication - Custom Communication Systems
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Bluetooth LE chat app to communicate between android devices with P2P architecture. ([Clients](https://github.com/niedev/RTranslator)) `Apache-2.0` `Java`Language-agnostic real-time messaging (Websocket or SockJS) server. ([Demo](https://github.com/centrifugal/centrifugo#demo)) `MIT` `Go`Full featured livechat, helpcenter and CRM as an alternative to Intercom & Drift, Crisp and others. ([Source Code](https://github.com/chaskiq/chaskiq)) `AGPL-3.0` `Ruby`Self-hosted customer communication platform, an alternative to Intercom & Zendesk. ([Source Code](https://github.com/chatwoot/chatwoot)) `MIT` `Ruby`Tiny webchat server. `GPL-2.0` `Go`A simple, fast, and reliable chat server powered by Matrix. ([Source Code](https://gitlab.com/famedly/conduit)) `Apache-2.0` `Rust`End-to-end encrypted instant web chat. `MIT` `Nodejs`Fully-featured Matrix client for Web, iOS & Android. ([Source Code](https://github.com/vector-im/element-web)) `Apache-2.0` `Javascript`DIY Message and file encryption for any platform. `GPL-3.0` `Javascript`Anonymously share files, browse and publish _freesites_ (web sites accessible only through Freenet) and chat on forums. ([Source Code](https://github.com/freenet/fred)) `GPL-2.0` `Java`Galène (or Galene) is a videoconference server (an “SFU”) that is easy to deploy and that requires moderate server resources. ([Source Code](https://github.com/jech/galene)) `MIT` `Go`Free software framework for decentralized, peer-to-peer networking. ([Source Code](https://gnunet.org/git/)) `GPL-3.0` `C`Self-hosted notification server with Android and CLI clients, similar to PushBullet. ([Source Code](https://github.com/gotify/server), [Clients](https://github.com/gotify/android)) `MIT` `Go`HawkPost is a web app that lets you create unique links that you can share with a person that desires to send you important information but doesn't know how to encrypt it. The message is encrypted in their browser and sent to your email address. ([Source Code](https://github.com/whitesmith/hawkpost)) `MIT` `Python`Free and universal communication platform which preserves the user's privacy and freedoms (formerly GNU Ring). ([Source Code](https://git.ring.cx/savoirfairelinux/ring-project)) `GPL-3.0` `C++`Jitsi Meet is an OpenSource (MIT) WebRTC Javascript application that uses Jitsi Videobridge to provide high quality, scalable video conferences. ([Source Code](https://github.com/jitsi/jitsi-meet)) `MIT` `Javascript`WebRTC compatible Selective Forwarding Unit (SFU) that allows for multiuser video communication. ([Source Code](https://github.com/jitsi/jitsi-videobridge)) `Apache-2.0` `Java`PHP Based Live Chat Application. `Apache-2.0` `PHP`Ephemeral, encrypted, in-browser chat rooms. `AGPL-3.0` `Javascript`Self hosted chat suite written in Node. ([Source Code](https://github.com/sdelements/lets-chat)) `MIT` `Nodejs`Decentralized and secure breaking news notification system. ([Source Code](https://github.com/milesmcc/LibreNews-Server/)) `GPL-3.0` `Python`Live Support chat for your website. ([Source Code](https://github.com/LiveHelperChat/livehelperchat)) `Apache-2.0` `PHP`Modern, scalable WebRTC conferencing platform with client SDKs. ([Demo](https://livekit.io/playground), [Source Code](https://github.com/livekit/livekit-server)) `Apache-2.0` `Go`Web client meant to be a showcase of Matrix capabilities, and reference implementation of the Matrix standard. ([Source Code](https://github.com/matrix-org/matrix-angular-sdk)) `Apache-2.0` `Javascript`Open-source, on-prem Slack-alternative. It can be integrated with Gitlab. ([Source Code](https://github.com/mattermost/mattermost-server)) `AGPL-3.0/Apache-2.0` `Go`Multi-room persistent chat server. ([Source Code](https://github.com/Canop/miaou)) `MIT` `Nodejs`Mibew Messenger is an open-source live support application written in PHP and MySQL. It enables one-on-one chat assistance in real-time directly from your website. ([Demo](https://mibew.org/demo2), [Source Code](https://github.com/Mibew/mibew)) `Apache-2.0` `PHP`Low-latency, high quality voice/text chat software. ([Source Code](https://github.com/mumble-voip/mumble), [Clients](https://wiki.mumble.info/wiki/3rd_Party_Applications)) `BSD-3-Clause` `C++`One-Time-Secret sharing platform with a symmetric 256bit AES encryption in the browser. ([Source Code](https://github.com/Luzifer/ots)) `Apache-2.0` `Go`An open source live customer chat web app written in Elixir. ([Demo](https://app.papercups.io/demo), [Source Code](https://github.com/papercups-io/papercups)) `MIT` `Elixir`Self-hosted notification server for relaying push notifications via Matrix, similar to PushBullet and Gotify. `ISC` `Go`pWS is a free, open-source Pusher drop-in alternative. `MIT` `Nodejs`Rallly is a free collaborative scheduling service. ([Source Code](https://github.com/lukevella/Rallly)) `CC-BY-SA-4.0` `Nodejs`Secured and decentralized communication system. Offers decentralized chat, forums, messaging, file transfer. ([Source Code](https://github.com/RetroShare/RetroShare)) `GPL-2.0` `C++`Revolt is a user-first chat platform built with modern web technologies. ([Source Code](https://github.com/revoltchat)) `AGPL-3.0` `Rust`Teamchat solution similar to Gitter.im or Slack. ([Source Code](https://github.com/RocketChat/Rocket.Chat)) `MIT` `Nodejs`Keep secrets out of emails or chat logs, share them using secure links with passphrase and expiration dates. `MIT` `Python`Spectrum 2 is an open source instant messaging transport. It allows users to chat together even when they are using different IM networks. ([Source Code](https://github.com/SpectrumIM/spectrum2)) `GPL-3.0` `C++`WebRTC audio/video calls, conferencing server, and web client. ([Source Code](https://github.com/strukturag/spreed-webrtc)) `AGPL-3.0` `Go`A self-hosted Android messenger, S3-compatible storage is the only backend needed. ([Source Code](https://gitlab.com/cweb-repos/cweb-conversations), [Clients](https://f-droid.org/en/packages/com.cweb.messenger/)) `GPL-3.0` `Java`Server for [Matrix](https://matrix.org/), an open standard for decentralized persistent communication. ([Source Code](https://github.com/matrix-org/synapse)) `Apache-2.0` `Python`Syndie is a libre system for operating distributed forums. `CC0-1.0` `Java`Outgoing SMS API that uses carrier-specific gateways to deliver your text messages for free, and without ads. `MIT` `Javascript`Instant messaging platform. Backend in Go. Clients: Swift iOS, Java Android, JS webapp, scriptable command line; chatbots. ([Demo](https://sandbox.tinode.co/), [Source Code](https://github.com/tinode/chat), [Clients](https://github.com/tinode/webapp)) `GPL-3.0` `Go`Distributed, secure messenger with audio and video chat capabilities. ([Source Code](https://github.com/TokTok/c-toxcore)) `GPL-3.0` `C`Peer-to-peer video chat that works. ([Source Code](https://github.com/trailofbits/tubertc)) `MIT` `Javascript` A web Whiteboard to collaborate in real-time on schemas, drawings, and notes. ([Demo](https://wbo.ophir.dev/)) `AGPL-3.0` `Nodejs/Docker`Open, free, and uncensorable websites, using Bitcoin cryptography and BitTorrent network. ([Source Code](https://github.com/HelloZeroNet/ZeroNet)) `GPL-2.0` `Python`Zulip is a powerful, open source group chat application. ([Source Code](https://github.com/zulip/zulip)) `Apache-2.0/Other` `Python`