basically gorhill forked his own project into ‘ublock origin’ and gave the original ‘ublock’ to someone else.

the original kinda fizzled out after that person tried to solicit donations. ‘ublock’ was then sold to ‘adblock’ and restarted-sorta.

a few years later, eyeo (known for ‘adblockplus’) bought ‘adblock’ (and with it, what became of the original ‘ublock’).