Certainly true that JIRA is neither Gratis nor Libre, nor does Atlassian accepted patches from the public. But it's Open Source in the sense that every license

Certainly true that JIRA is neither Gratis nor Libre, nor does Atlassian accepted patches from the public. But it's Open Source in the sense that every license holder can download and build it: http://confluence.atlassian.com/display/JIRA/Building+JIRA+from+Source http://confluence.atlassian.com/display/JIRA/Building+JIRA+f... (disclosure: I am a former Atlassian employee)