I've never had joy using Jira, but if there's something nice out there I'm all for it. Mantis was a PHP one back in the day that just did issue tracking, and I loved it for that. But purely issue tracking, not the whole hog.
Other companies can only achieve this level of broken through acquisitions, distributed teams, competing for scarce internal resources and stack ranking. Atlassian achieved it by ignoring customer requirements, rapid feature growth, and monolithic java.