[zeusk]

Do you know of any such programs? I've been wanting to experiment with DDC but like you said, monitor support is sporadic and tooling isn't well known

[nkrisc]

Another commenter mentioned ddcutil which had forgotten about but did use. In my case I used it in a MacBook (Computer #1) and used a different GUI program I can’t remember the name of on my v windows machine (Computer #2).