This package is an installer for the MSGF+ search tool.

MSGF+ is developed at the Centre for Computational Mass Spectrometry at UCSD. 
It is described as follows;

Summary
MS-GF+ is a new MS/MS database search tool that is sensitive (it identifies more peptides than other database search tools and as many peptides as spectral library search tools) and universal (works well for diverse types of spectra, different configurations of MS instruments and different experimental protocols).

MS-GF+ supports the HUPO PSI standard input (mzML) and output (mzIdentML).


Full documentation for MSGF+ can be found at these urls

https://bix-lab.ucsd.edu/pages/viewpage.action?pageId=13533355
http://proteomics.ucsd.edu/Software/MSGFPlus.html#documentation