CalcProgrammer1/OpenRGB
Open source RGB lighting control that doesn't depend on manufacturer software. Supports Windows, Linux, MacOS. Mirror of https://gitlab.com/CalcProgrammer1/OpenRGB. Releases can be found on GitLab.
License & maintenance
GPL-2.0 is a copyleft license: products that include or modify it may have to publish their code.
Last code push today.