Windows 98 -> Slackware dual boot (with big ol’ red grub screen) -> windows up to win 10 -> debian(laptop) win10 (pc)
Gonna try getting a new m.2 drive and dual booting soon to test playing the games I like on Linux. If all goes well, I’ll be moving away from windows
Tux Guitar comes to mind but some things like chord diagrams isn’t done as well as guitar pro (imo).
For chord diagrams (like at the top of GP), there’s hundreds of websites out there which show those and its probably quicker to just use those. I’ll usually just search “C chord <instrument>”.