Just proposed two of my C projects for inclusion:

TinyExpr - evaluate math from string - https://github.com/codeplea/tinyexpr

minctest - very minimal C unit tests - https://github.com/codeplea/minctest

TinyExpr is a single source file + header, while minctest is a single header. Both are zlib licensed.

Also, I'd appreciate feedback if anyone is interested.