Fabrice Bellard is one of my heros. Humble, talented, and prolific - see <a href="http://bellard.org/" rel="nofollow">http://bellard.org/</a><p>Not less importantly, most of it is open source, and in fact, much of it making today's open source tick as well as it does:<p>QEMU formed the basis on which VirtualBox, Xen and KVM were built. They would have been possible without it - but it was the shoulders-of-giants[1] they could step on.<p>FFMPEG makes every video related website or service in the world tick. (Again, same shoulders-of-giants principle)<p>And he's done so much more.<p>Thanks, Mr. Bellard.<p>[1] Yes, I'm aware that Newton was mocking Hooke. I'm using it in the commonly used sense.