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Test Center

Install and manage experiments

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cx.modal.TestCenter
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Try experimental versions of apps and system components, from a merge request, branch, or bundle file.

System component installation only works on GNOME OS.

Screenshots

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Observed history

App ChangeVersionWhen ↓
updated0.3.018 Sept 2026

Upstream releases

Release notes supplied by the developer. These dates are not Flathub package publication times.

0.3.018 Sept 2026

Various minor interface fixes and workflow improvements

  • Unified sysexts and flatpaks in the install dialog into a single view
  • Added support for installing experiments from GitLab pipeline URLs
  • Fixed issue where installed apps wouldn't start because of wrong flatpak path
0.2.028 Aug 2026

Adds support for installing from merge request URLs.

0.1.021 Aug 2026

Initial version, allows installing and removing Flatpaks and sysexts.