I love redmine, it's been really good and 0 upkeep for my company for a couple of years now.

I hope you don't mean literally zero because there have been numerous Rails vulnerabilities in the intervening time. If you're been running the same instance for a few years unpatched and publicly accessible, chances are good your installation is owned.

Not my case. I didnt mean literally zero but we never hit a bug.

It's not bad, still, it tries to be too similar to Trac