Frey is a high-level library intended to write end-user applications, such as embedded applications, drivers, etc. It's written in ANSI C++, and comes with almost no dependencies whatsoever.
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.