As time goes on people are finding smaller, more efficient ways to do things. I'm really impressed at some of the amazing things people have made that are so incredibly simple.
Our quest for "a better wheel" has lead to things like a 3Kb javascript framework, a 1kB ORM, a tweet sized framework & DI container, an entire forum in 1kb, a 960Byte (& even 1 line) CSS grid.
What tiny open source projects have you found that should be shared so others can build faster applications? Answer with the most votes wins. But really, we will all win by discovering cool projects.