Master: Dev:

Application Launcher for Linux 🐧

Ulauncher is a fast application launcher for Linux. It's is written in Python, using GTK+.

App Search	File Browser	Custom Themes

Download it at ulauncher.io

Create Your Ulauncher Extensions

As of Ulauncher v3, you can create your own Ulauncher extensions Check out docs.ulauncher.io to find out how.

Create Your Ulauncher Color themes

As of Ulauncher v4, you can create your own color themes Check out docs.ulauncher.io to find out how.

Systemd users

If your distribution packages ulauncher.service properly, then you can run ulauncher on startup by running:

systemctl --user enable ulauncher.service

Known Issues

If your DE doesn't use compositing, run ulauncher with --no-window-shadow to remove a black box around a window
[Solved] inotify watch limit reached
[Workaround exists] Can't map the keys to ALT+SPACE
[Workaround exists] Hotkey doesn't work in Wayland when is triggered from certain apps
[Workaround exists] Border appears around ulauncher window in Sway DE

Code Contribution

Project	Contributor-friendly Issues
Ulauncher App
Frontend for extensions website Uses ReactJS
API for extensions website Uses Python and bottle library

Any code contributions are welcomed as long as they are discussed in Github Issues with maintainers. Be aware that if you decide to change something and submit a PR on your own, it may not be accepted.

Checkout Code Contribution Guidelines for more info.

Setup Development Environment

You must have the following things installed:

Docker
python3-distutils-extra

Application runtime dependencies. (You don't have to manually install these if you have already installed Ulauncher)

sudo apt-get install \
  libkeybinder-3.0-0 \
  libgtk-3-0 \
  gir1.2-gtk-3.0 \
  gir1.2-keybinder-3.0 \
  gir1.2-webkit2-4.0 \
  gir1.2-glib-2.0 \
  gir1.2-notify-0.7 \
  gir1.2-gdkpixbuf-2.0 \
  gir1.2-ayatanaappindicator3-0.1 \
  python3-dbus \
  python3-levenshtein \
  python3-pyinotify \
  python3-websocket \
  python3-xdg

Build and Run

$ ./ul init-dev-env installs Ulauncher data to ~/.local/share/ulauncher/
$ ./ul dev-container will take you into a Docker container from which you can run build and test scripts. Use sudo -E ./ul dev-container if your user is not in the docker group.
root@container: # ./ul build-preferences build preferences UI in JS/HTML
root@container: # ./ul test runs linter, type checker, and unit tests
$ ./ul run runs the app

Check out output of ./ul to find more useful commands.

License

See the LICENSE file for license rights and limitations (GNU GPL v3.0).

tchar/Ulauncher