Bugzilla. Seriously.
replyCan be easily extended and unneeded fields can be disabled via template.
We use it since 20 years at a 6000 heads company and it's totally fine.
You can try Ekso:
replyFully self-hosted, dockerized.
We made the pricing reasonable -- YMMV.
https://www.openproject.org/blog/open-source-jira-alternativ...
replyI haven‘t used it myself, though
Honestly the best issue tracker I've used so far is Phabricator (now Phorge). It would be a bit weird to use it just for issues though, and tbh I'm not sure I would recommend it as a forge because it has approximately no CI support.
replyRedmine, maybe? With or without Redmine X.
reply