Java based parser for X!Tandem output xml files
XTandem Parser is a Java project for extracting information from X!Tandem output xml files. X!Tandem software can match tandem mass spectra with peptide sequences and works as a search engine for protein identification. The output xml format can be found here (PDF).
Download here: http://compomics.github.io/projects/xtandem-parser.html.