PW32 is primarily C runtime library for Win32 aiming to POSIX compliance. Its main concerns are effeciency and support even for low-end Win9x systems. LGPL. Also, PW32 is collection of ported software, aiming to be GNU (etc.) distribution for Win32.
Open source project that offer summary and download services on this page is a project that carry out their development work on other open source development sites. Their work is linked to this page via a feature called OFI, and their work is not carried out here on OSDN site.