Quick search surfaced the following for Linux:
k3b, where the source repo states bluray burning capabilities.
xfburn also mentions bluray burning capabilities.
For Windows, albeit old and unupdated, I know the following still works for other purposes (never tried bluray burning/writing though):
ImgBurn mentions bluray burning/writing capabilities, but never tried it.
Bonus: not capable of bluray burning/writing but just fun to mention for any still into ripping/writing to discs on Windows:
InfraRecorder, simply a classic, and it’s open source!
Was hoping they might have added an option to Not Update/Skip Update or Never Update, or some other means to preserve the currently installed version. I don’t like Valve’s (and other tech businesses’) assumption that updates are always good.
The only games for which these update settings make some sense are always online, “service” games. Other games are largely fine to indefinitely delay updates on, or never update at all.