Optaros Open Source Catalog. Open source consulting and integration firm Optaros has released a catalogue of open source projects that it says should help IT managers separate the wheat from the chaff when considering free software. The Open Source Catalogue 2007, available on the Optaros Web site (registration required), reviews 262 open source software projects that fit into four software categories: operating systems, application development, infrastructure solutions and business applications. The applications range from projects such as Red Hat Enterprise Linux and the MySQL database to the Enhydra Shark workflow engine and the Bricolage content management system. (Click to close this window)