If you own a razer mouse and use Linux then you may be interested in OpenRazer. While Razer doesn't provide open source drivers for their products OpenRazer aims to fill this void. It has recently been updated to version 3.10.1 which brings support for three new devices. The update also fixes three bugs. OpenRazer is licensed under GPLv2.0 and is available through various distros and Github.
The project's main website is here:
The source code is on Github:
https://github.com/openrazer/openrazer
The release notes for this update can be found here:
https://github.com/openrazer/openrazer/releases/tag/v3.10.1
The project also has a presence on Mastodon and Matrix:
https://matrix.to/#/# openrazer:matrix.org
https://fosstodon.org/@ openrazer
They currently accept donations through Paypal via the Github page if you want to help support the project.