This is a modular (python) framework facilitating the audit of compiled object code. Using it, you can analyze executable code (programs/libraries) or entire filesystem images or even complete firmware images and search it for strings, symbol tables and the like. Using a corresponding knowledge base, it can match this information against information derived from software source code and thus give some indication of whether a particular source code seems to have been used to create the binary.
It doesn't do actual instruction-level analysis or any of that sort, but it can help to automatize some of the steps that a license compliance engineer so far had to do entirely manually.
Let's hope this is a successful launch and that the project will find contributors to grow beyond the initial feature-set.