SU is also available for Confluence, Bamboo and Fisheye 

1.4

• This release now uses specific JIRA6 API's that work with user keys, which remain the same when user names change.  It has also been updated with SU session auditing feature, located in the Security administration section, so recent SU activity can be tracked.

1.3.20

- This is the last version compatible with JIRA5.