Team chat
Channels and direct messages for internal communication.
137 products
T
Fast. Secure. Powerful.
Free planOpen source
M
An open protocol for secure, decentralised communication.
Open source
A
Video conferencing, chat, whiteboard, and document collaboration.
Open source
T
A high-performance Matrix homeserver and the official successor to conduwuit.
Open source
T
Fast and secure desktop app, perfectly synced with your mobile phone.
Free planOpen source
T
Three kinds of APIs for developers: Bot API, Telegram API with TDLib, and Gateway API.
Free planOpen source
E
Freedom to communicate on your own terms.
Free planOpen source
O
Open-source AI assistant that runs on your own machine and works from chat apps
Free planOpen source
G
Where developers come to talk
Free planOpen source
N
Push notifications made easy
Free planOpen source
J
Share, freely and privately
Free planOpen source
W
Secure messenger for organizations with end-to-end encryption.
Free planOpen source
B
One inbox for all your chats
Free planOpen source
D
A platform providing online services based on principles of freedom, privacy, and
Free planOpen source
P
Chat client for signing in to multiple chat networks at once.
Open source
S
Find your community
Free planOpen source
Y
A system that installs itself on a server and lets you install and maintain digital apps
Open source
T
Secure communication for individuals and companies
Open source
G
Mailman, the GNU mailing list manager.
Open source
F
A chat app that puts you first.
Free planOpen source
G
Free and fully featured chat app for XMPP.
Free planOpen source
C
Chat client for Twitch
Free planOpen source
M
The mailserver suite with the 'moo'.
Open source
R
Open-source communications platform
Free planOpen source
M
Free, open-source, low-latency, high-quality voice chat.
Free planOpen source
D
Decentralized & Secure Messaging
Free planOpen source
P
Bring your agents to iMessage, WhatsApp, Telegram, Slack, and beyond
Free planOpen source
I
Open source community for real-time collaboration via XMPP.
Open source
C
A Jabber/XMPP client for Android 6.0+ smartphones.
Free planOpen source
E
Open source collaboration suite. Made in Germany.
Open source
H
Peer-to-peer network for censorship-resistant and privacy-respecting publishing and **通信**
Free planOpen source
H
HumHub: Where your organization comes together.
Free planOpen source
P
A modern XMPP communication server written in Lua
Open source
K
A hand-crafted web IRC client that's easy to enjoy
Open source
I
Modular text mode chat client with IRC support
Free planOpen source
K
Open source email and groupware, self-hosted since 2003
Open source
A
A free instant messaging application for macOS that connects to XMPP (Jabber), IRC and IM
Free planOpen source
C
Meet the Citadel System. Easy to install. Easy to use. 100% open source. No compromises.
Open source
P
One subscription, unlimited apps running in the browser
Free planOpen source
N
The real-time communication fabric for distributed agents and applications.
Free planOpen source
K
The Open Source SIP Server
Open source
S
An Open Source Webmail for businesses and communities
Free planOpen source
T
A New Kind of Instant Messaging
Free planOpen source
U
The next generation IRCd.
Open source
S
A network of open source tools for software project maintainers and collaborators, hosted
Free planOpen source
C
A community-driven Matrix homeserver
Open source
W
Fast, light and extensible chat client with a text-based user interface
Free planOpen source
E
The messaging server that keeps real-time under your control.
Free planOpen source
O
Productivity + Privacy
Open source
L
An easy-to-use NNTP news proxy for Unix/Linux systems
Open source
B
Free, open source, peer-to-peer LAN messenger
Free planOpen source
E
Open-source digital workplace platform combining intranet, collaboration, knowledge and A
Open source
W
Create a virtual world where teams meet, talk, and collaborate through avatars
Free planOpen source
S
Chat that is simple, secure, and private
Open source
S
Private, secure by design — transact, message and browse in one app
Free planOpen source
P
Meeting software for agile ceremonies, for remote teams.
Free planOpen source
M
Next Generation of Miranda IM
Open source
F
Personal server running a free software operating system with free applications for a home
Open source
O
Open Source Software for Running Your Own Live Stream
Free planOpen source
E
Free Your Speech
Free planOpen source
B
La messagerie collaborative souveraine et ouverte
Open source
P
Messaging infrastructure built on open standards
Open source
O
The open platform for business communication.
Open source
X
Open-source XMPP client for Android and Web
Free planOpen source
D
Communicating happiness.
Open source
M
A simple yet full-featured mail server delivered as a set of Docker images.
Open source
R
Code review and document review tool for projects and companies of all sizes
Open source
K
The Visual IRC Client
Free planOpen source
C
Take control of all your data.
Free planOpen source
T
The self-hosted web IRC client
Free planOpen source
C
Your own chat server
Open source
O
OneCLI: AI teammates for your business-critical work.
Free planOpen source
C
A powerful, open-source, web-based XMPP chat client.
Open source
C
Free and open source encrypted chat for iOS.
Free planOpen source
T
Instant messaging for public sector agents, designed and operated by the French State (DIN
Free planOpen source
B
Bitmessage: P2P encrypted messaging protocol for individuals and subscribers.
Free planOpen source
Z
Threaded team chat for focused conversations.
Free planOpen source
L
Open source live support chat for your website with bot, voice, video, screen share, AI, R
Free planOpen source
N
Your personal AI agent. Secure. Lightweight. Yours.
Free planOpen source
C
Scalable real-time messaging server
Open source
T
a free Jabber client in Tcl/Tk
Free planOpen source
L
A free filesharing tool for local area networks
Free planOpen source
E
Budgeting app for personal, couple, and family finances
Free planOpen source
R
Secure communication for everyone
Free planOpen source
P
Free, secure peer-to-peer file transfer and clipboard sharing tool built on WebRTC with no
Free planOpen source
H
A self-hosted bridge that interacts with the Fediverse on behalf of your static site
Open source
L
Decentralized, multi-frontend communication tool
Open source
C
Open-source and local-first collaboration infrastructure
Free planOpen source
T
Software for digital collaboration in companies and organizations, combining groupware and
Open source
K
A modern and Open Source Web client for XMPP
Open source
N
Flexible pubsub for the modern web
Open source
H
Open source projects built by the HackMIT team for hackathons and events.
Open source
L
Your personal server
Free planOpen source
H
Learn How To Keep Your Data in Your Home
Free planOpen source
S
Scalable open source pub/sub SDK with support for RPC, JWT authentication and Kubernetes —
Open source
F
Embeddable team messaging widget for B2B customer support
Free planOpen source
S
Pipe output from command-line programs to the web in real-time
Free planOpen source
P
Decentralized platform for owning and controlling your data
Free planOpen source
R
Your AI coworker with memory
Free planOpen source
A
Turn coding agents into a working team.
Free planOpen source
W
An Open Source project to build your own IP telecom platform
Open source
T
Instant Communication, Presence And Messaging software based on the XMPP standard
Free planOpen source
C
Encrypted communication and telehealth service running in the browser
Free planOpen source
O
A universal secure chat app under your user's control
Open source
M
Meshtastic dashboard built for operators
Free planOpen source
S
Next-generation open source chat server
Free planOpen source
R
IRC without netsplits
Open source
S
Open source screen sharing for developers
Open source
I
A high-performance Internet Relay Chat (IRCv3) server for UNIX-like and Windows systems
Open source
E
Modern IRC software
Open source
K
Slack app for finding and sending kaomoji.
Open source
H
Remote control for coding agents running on your own computers
Free planOpen source
V
Simple. Record. Edit. Share.
Free planOpen source
A
Open-source streaming data platform for AI agents and real-time pipelines
Free planOpen source
F
Unix wisdom, modern delivery
Open source
F
Handcrafted, high-quality, native apps for Mac, iOS, and Windows
Open source
H
Open source SQL assistant for data warehouses
Open source
T
Who's putting the kettle on? A simple tea-round command for your chat team.
Free planOpen source
A
Connects Are.na to Slack
Free planOpen source
S
Strava integration with Slack
Free planOpen source
T
Quickly send Slack messages using templates
Free planOpen source
O
Open source poll for Slack
Free planOpen source
T
Open source messaging platform built mobile-first
Free planOpen source
M
More emoji in Slack
Free planOpen source
B
Simple encrypted and decentralized chat
Free planOpen source
M
Create Mermaid diagrams and charts in Slack.
Free planOpen source
C
A time zone conversion app for cross-timezone collaboration
Free planOpen source
X
Open source unified communication solution
Open source
C
Instant Messaging Program with Whiteboard
Free planOpen source
D
Simplify messaging for your work and personal life.
Free planOpen source
S
Free, distributed IRC client with XMPP/Jabber support for Linux, Windows, and more.
Free planOpen source
W
Free P2P VPN software for connecting directly with contacts
Free planOpen source
T
Home of the TeamTalk Conferencing System
Free planOpen source
M
A secure, anonymous, peer-to-peer, instant messenger! One messenger for Internet and LAN
Free planOpen source
S
Small and highly customizable twin-panel file manager for Linux
Open source
P
Self-hosted podcast server with cross-device sync.
Open source
A
Realtime server with delivery guarantees, presence tracking, and message ordering for any
Free planOpen source