LibAST is the Library of Assorted Spiffy Things. It contains various handy routines and drop-in substitutes for some good-but-non-portable functions. It currently has a built-in memory tracking subsystem as well as some debugging aids and other similar tools.
It's not documented yet, mostly because it's not finished. Hence the version number that begins with 0.
The library is available as 32-bit and 64-bit: