Create both simple and complex formulas to calculate your JIRA custom fields. This is the JIRA calculator you have been missing. Create one or more formulas per project for your calculations using number fields, text fields or radio buttons. .
The Selenium test runner plugin for Atlassian Bamboo. Run Selenium IDE scripts (Selenese) on multiple bamboo agents in parallel. Charlotte presents results beautifully with screen shots and highlighted text so that you can spot the problem easily.