When comparing Fossil vs Trac, the Slant community recommends Fossil for most people. In the question“What are the best bug/issue tracking tools for small development teams?” Fossil is ranked 10th while Trac is ranked 15th. The most important reason people chose Fossil is:
If you need a (distrubuted) SCM, Fossil comes with a built-in SCM, a wiki and issue tracker.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro DSCM + issue tracker + wiki
If you need a (distrubuted) SCM, Fossil comes with a built-in SCM, a wiki and issue tracker.
Pro Self-contained file
The data is stored in one single file. No file structure distributed over a bunch of folders.
Pro Multi platform
The executable is provided for multiple platforms, e.g. Linux, macOS, Windows.
Pro Easy to install
The Fossil application contains one single file. No need to install dependencies.
Pro Database support
Supports PostgreSQL, MySQL and SQLite.
Pro GIT and SVN support
Pro Open source
Written in Python.
Pro Bitnami installer
Bitnami installer available.
Cons
Con Ticket comments can't be edited
While a ticket can have multiple comments added to it, and (separately) also attachments — if the users have the right permissions — it is impossible to edit a comment after submitting it. This is probably why a comment must be previewed before it can be submitted.
Con Python
Python can be slow sometimes.
