- JIRA supports easily linking issues to confluence pages or URI's. You can also embed JIRA issue numbers in confluence pages to link to a JIRA issue.
- Linking JIRA projects to confluence pages requires admin support: https://confluence.atlassian.com/display/APPLINKS/Creating+Links+Between+Projects
- Rally supports adding links into an story/incident as a free form link, but it is buried in the discussion tab.
- JIRA 6.2 + Stash (https://www.atlassian.com/software/stash) 5
- RallyDev https://help.rallydev.com/github-installation-user-guide