Dvips is a program to convert TeX DVI files to PostScript, principally written by Tom Rokicki.
Dvips is no longer distributed as a standalone package. It is maintained as part of the TeX Live distribution (browse source directory, retrieve TL sources). It is also included in other TeX distributions.
The Dvips manual is available online in HTML and PDF. You may also find it in your local Info system if you have one; try running info dvips or M-x info in Emacs.
At one time, there was a variant program Dvipsk, which adapted Dvips to Kpathsea. Now the Kpathsea support is in the original sources, and there is only one program.
Bug reports, enhancement requests, and other discussion: please email tex-k (at) tug dot org.