Vial
Vial is an open-source cross-platform (Windows, Linux and Mac)
Vial is a free, open-source keyboard configuration application designed for customizing compatible mechanical keyboards in real time. It provides a graphical interface for remapping keys without recompiling or reflashing firmware. Based on QMK, the software supports multiple keyboard layers and advanced key behaviors. Users can create macros, configure key combinations, and assign different actions to tapping or holding keys. It also provides access to supported QMK settings and specialized keycodes. Changes are stored on compatible keyboards, allowing customized layouts to work across computers. ...