Subversion is designed to improve team work. Subversion allows to save all file revisions and multiple users to interact on the same project. Even if it works on local host or network computer, each user works on local copy of files. Master data are saved on the server « repository » and are updated through secured processes.

Subversion allows sharing data online through firewall by using directly simple http(s) internet transfer protocol.

Trac allows different users to follow project progress. Any user can use "timeline" interactive system to know the last modifications.

Users can create tickets. These tickets are collected and can be assigned to a responsible that will be in charge of closing them. The tickets can be used to manage evolutions or modification requests for a project.