Communication & Chat
Replaces: WhatsApp, Slack, Teams
Encrypted and privacy-friendly messengers and chat platforms. Secure alternatives to WhatsApp, Slack and Microsoft Teams.
Tools
Element/Matrix
Decentralized messenger with end-to-end encryption based on Matrix
Signal
The gold standard for secure private communication
XMPP/Prosody
Open messaging protocol with the lightweight Prosody server
Rocket.Chat
Versatile team communication platform with extensive integrations
Mattermost
Secure Slack alternative for enterprises and DevOps teams
Zulip
Team chat with a unique threading model for productive communication
Jami
Decentralized peer-to-peer messenger without central servers
Briar
Secure messenger for activists and journalists with Tor support
Colanode
And local-first Slack and Notion alternative that puts you in control of your data
Sharkord
Lightweight, self-hosted, open-source chat server with voice, video, text, and screen sharing.
Ethora
Engine for chat 💬, AI assistants 🤖 & wallets 🪪.
Server
screen sharing for developers https://screego.net/
Spacebarchat
Spacebar is a free open source selfhostable discord compatible communication platform
Bark Server
Backend of Bark
Rocket.chat.electron
The Secure CommsOS™ for mission-critical operations
Databag
fast & lightweight self-hosted messenger
Toxic
A Tox-based instant messaging and video chat client.
Watomatic
Auto reply app to enable auto reply for messengers like WhatsApp and Facebook Messenger