I agree with GitHub, everyone here is talking about programming languages, but the ability to search through millions of projects and basically get a 'head star

I agree with GitHub, everyone here is talking about programming languages, but the ability to search through millions of projects and basically get a 'head start' on any idea you come up with is just brilliant. The other day I needed a Bezier curve editor and GitHub gave me a 100 to choose from! I just took the one with the most features and started adding to it from there - saved perhaps a week of effort right off the bat.