AnyCable
Realtime server for reliable two-way communication over WebSockets, Server-sent events, etc.
Free
Communication · Custom messaging
Communication software used to provide remote access to systems and exchange files and messages in text, audio and/or video formats between different computers or users, using their own custom protocols. · Category descriptions are the source's original text
Chitchatter
Peer-to-peer chat app that is serverless, decentralized, and ephemeral.
RetroShare
Secured and decentralized communication system. Offers decentralized chat, forums, messaging, file transfer.
GlobaLeaks
Whistleblowing software enabling anyone to easily set up and maintain a secure reporting platform.
Databag
Federated, end-to-end encrypted messaging service for the web, iOS, and Android, supporting text, photos, video, and WebRTC video and audio...
Hyphanet
Anonymously share files, browse and publish _freesites_ (web sites accessible only through Hyphanet) and chat on forums.
Notifo
Multichannel notification server with support for Email, Mobile Push, Web Push, SMS, messaging and a javascript plugin.
OTS
One-Time-Secret sharing platform with a symmetric 256bit AES encryption in the browser.
Spectrum 2
Spectrum 2 is an open source instant messaging transport. It allows users to chat together even when they are using different IM networks.
Shhh
Keep secrets out of emails or chat logs, share them using secure links with passphrase and expiration dates.
PushBits
Notification server for relaying push notifications via Matrix, similar to PushBullet and Gotify.
Tiledesk
All-in-one customer engagement platform from lead-gen to post-sales, from WhatsApp to your website. With omni-channel live agents and AI-pow...
Continuwuity
Community-driven Matrix homeserver, the continuation of conduwuit focusing on user experience and new features (fork of Conduit).
Groupboard
Online whiteboard, audio/video conferencing, screen sharing, shared code editing and optional session recording/playback.
Jami
Universal communication platform which preserves the user's privacy and freedoms.
PrivMX WebMail
Web-based, end-to-end encrypted email platform that uses an independent PKI.
TrueConf
Platform for your corporate communications, based on the advanced architecture, with support for UltraHD video conferencing, built-in messen...
Virola Messenger
Instant messaging and collaboration tool with private and group chat rooms, continuous voice and video meetings, files sharing, issue tracki...
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