Splitter is a timer program for speedrunners that is easy to use, and fully customizable.

Splitter - Celeste any%
Complete: Splitter display all four split values. The run time, the split time, and the difference to the related personal best run values. A color code is used to distinguish gold splits (yellow), saved time (green), or lost time (red).
Wayland compatible: There is currently no way for a program in Wayland to bind global shortcuts. This is important for a speedrunner to be able to mark the splits easily. Splitter comes as a client/server program, and offer a companion cli splitterctl
to control the GUI remotely.
Hookable: It is really to connect splitter to external programs. By example CelesteMagicTimer can be used to trigger splitterctl forward
automatically when reaching the end of the levels.
Fully customizable: The colors, transparency, paddings, used fonts, split names, are completely configurable with the single .ini
file.