obviously 1. linux kernel, 2. git
But what's the third-best thing he's ever made outside the sphere of those two? The most I've been able to find is a pretty lowkey log software for dive computers. Surely he must have built something else right? So what's #3?
Update: okay I found out Linus made Subsurface in 2011 during the 2-week stretch of the "kernel.org disaster" when he wasn't getting any pull requests (I think this has something to do with a security breach). He was bored and wanted to do his biggest hobby of programming, so he turned to literally his only other hobby of scuba diving and made it. Pretty interesting stuff.
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