Redmine usage

Redmine is powerful bugtracker which contain a case tracker, document management, wiki, versionning GUI, RSS... and so can be use as a platform for developer communication.

Those plugins below allow you to easily manage contractors. You can setup a rate for each and when they track their time against tasks, you can after generate a report with the Timesheet plugin and get a detailed report of tasks, total time and total cost.

Recommended plugins

Budget
Invoice plugin
Rate Plugin
Timesheet Plugin