Jenkins is an award-winning application that monitors executions of repeated jobs, such as building a software project or jobs run by cron. Among those things, current Jenkins focuses on the following two jobs :
Weblate is a web based translation tool with tight Git integration. It features simple and clean user interface, propagation of translations across subprojects, consistency checks and automatic linking to source files.
Redmine is a flexible project management web application. Written using the Ruby on Rails framework, it is cross-platform and cross-database.
Using gitweb you can browse directory trees at arbitrary revisions, view contents of files (blobs), see log or shortlog of a given branch, examine commits, commit messages and changes made by a given commit. Gitweb can generate feeds in RSS or Atom format. You can get any given version of a file; if not disabled you can download a snapshot of a given version of a project (project tree at given revision). You can search (if it is not disabled) for commits by an author, added to repository by a comitter, commit with commit message (commit description) which includes some text.
Sphinx is a tool that makes it easy to create intelligent and beautiful documentation, written by Georg Brandl and licensed under the BSD license.