JIRA

"JIRA is a proprietary issue tracking product, developed by Atlassian. It provides bug tracking, issue tracking, and project management functions. Although normally styled JIRA, the product name is not an acronym, but a truncation of Gojira, the Japanese name for Godzilla. It has been developed since 2002."http://en.wikipedia.org/wiki/JIRA

Projects using JIRA