procps is a series of command line and full screen utilities that browse information contained in the proc filesystem that is usually mounted at /proc. This filesystem is dynamically generated by the kernel to provide information about the status of entries in its process table.
Most of the binaries are linked to the library that is also maintained by this project called libprocps.
This is a fork of procps. This fork was started by the maintainers of Debian, Fedora and openSUSE and assisted by a small group of independent developers.
The aim of the procps fork, which is now the only maintained version of procps, was to remove the number of distribution-specific patches and differences between the distributions.
The import occurred in late 2010 and was then followed by a flurry of patching imports that was held back previously. Eventually the level of backlogged patches reduced and procps is now actively maintained.