While both offer detailed permission management, the Atlassian approach can be considered incredibly clunky and prone to mistakes.
All tools are backed and developed by Atlassian, an established and world-class software company with a great history of customer support.
None of the tools are free on their own and the cost of combining all tools can become considerable quickly.
codeBeamer gives users the ability to give different levels of access in the repositories to different people. This allows teams to be more organized and adds another level of security to the repository.
A free single project license for 25 people will give access to a all functionality of codeBeamer for 90 days.