Color me impressed - Rockbox 3.5.1
Just installed v3.5.1 of Rockbox onto my Sansa e200v1 music player.
There are legions of commercial applications that could take some serious cues from Rockbox's ease of installation. On my Linux OS, I plugged in the player, ran the installer (a single file that worked fine as a 32-bit program on my 64-bit CPU), clicked a single button, answered a query about my player's version, and done.
No lengthy questionnaire about my host or target. No tweaking, startup problems, messing around in config files, searching for hidden options to enable the primary functionality.
It. Just. Worked.
Well done, Rockbox contributors.