Open source management system for issues, contacts, hardware, software etc.
Uses Java, Tomcat and PostgreSQL, the free version is limited to one user.
Ranked in these QuestionsQuestion Ranking
Pro Web based
No client software needed.
Pro Positive reviews
Positive reviews on SourceForge.
Pro Win, Mac, Linux
Might be too limited for advanced users, there seems to be no integration with version control systems like GIT or SVN.