Abaddon
Abaddon is a free, open-source chat app for Windows, macOS and Linux. An alternative Discord client with voice support made with C++ and GTK 3. It has 2,231 GitHub stars and is released under the GPL-3.0 license. Its source code is on GitHub at uowuo/abaddon.
github.com/uowuo/abaddon (opens in a new tab)
Data as of from the GitHub API; description from the project's repository. Report an error
About Abaddon
1 - Abaddon tries its best (though is not perfect) to make Discord think it's a legitimate web client. Some of the things done to do this include: using a browser user agent, sending the same IDENTIFY message that the official web client does, using API v9 endpoints in all cases, and not using endpoints the web client does not normally use. There are still a few smaller inconsistencies, however. For example the web client sends lots of telemetry via the /science endpoint (uBlock origin stops this) as well as in the headers of all requests.
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Is Abaddon free and open source?
Yes. Abaddon's source code is public on GitHub under the GPL-3.0 license, which is OSI-approved or FSF-free, so you can use, copy and change it for free.
How do I install Abaddon?
Download the installer for Windows, macOS and Linux from its GitHub Releases page (latest: v0.2.4).
Is Abaddon still maintained?
The repository's most recent commit was on Sep 9, 2026. appsgit only lists apps whose repository had a commit in the last six months.