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AtomJump.orgFully open sourced, messaging PWA (Progressive-Web-App) with expandable plugins.
No app downloads required. Runs on a standard low-end LAMP stack.

Open a Messaging Group

Open  Messaging

Open a Demo

Or choose another group

Or start a one-time group

Or try our News group

Or use a hosted group at AtomJump.com

Try the app now.

This optional app handles real-time notifications, and provides an easy shortcut to your favourite forums.

Message responsibly with AtomJump

AtomJump Messaging is human powered: There is no advertising. There is no algorithm.
There is no AI. And everyone moderates content. The 100% open-source software, maintained and developed by the non-profit AtomJump Foundation, can be run from our servers (public forums are free, while private rooms are NZ$15/year) or run freely from your own servers.
Because of this, we feel AtomJump is about as safe as we've been able to make it.
Message in Peace
Chat with any number of your friends, clients or family, privately or publicly. Then video conference using the complimentary open source tool Jitsi.
Single Click Server Install
Find hosting providers with a single click installation of AtomJump server, or AtomJump's LiveWiki hosting
VIP Service
Do you want dozens of server nodes, to handle high traffic loads? Try our VIP service.
Download the Appliance
The server software is free and open source.  Download the Appliance for Windows / Mac / Linux, or a PHP5 / PHP7  version on Apache & Linux servers.
Plugins
Select from a range of existing plugins. Then build your own additions to AtomJump Core, and sell or publish them.
Add to your website
Refer to our free AtomJump web-service to simplify your messaging installation. HTML and CSS, with an optional Wordpress integration. 
DESIGN

Do it your way.

Now you have the freedom to set up your messaging app your own way, using completely open technologies. AtomJump is now multi-award winning, but we started with small steps. Read more about our story here.
8
Years since development began
16
Plugins
260K
Topics
" The days of the single, enormous, closed communication platforms are coming to a close. These only serve to divide communities. We need to look for open platforms that don't lock us in. E.g. the Mastodon service is offering a different flavour of what we do here at AtomJump, and we see it as complimentary, thereby giving you a choice for each fresh situation."
– Peter Abrahamson, AtomJump
PLATFORM

Anytime, Anywhere.

Use any browser, on your mobile, tablet or desktop equally well. No downloads are required.
iOS
100%
Android
100%
Edge, Internet Explorer*
100%
Firefox
100%
Safari
100%
Chrome
100%
* IE does not support video conferencing, but text messages are fully supported.
Made with    by the AtomJump Foundation