We've used Redmine around ten years now (I'm the person who brought it in and set it up) and it's been rock solid. I upgrade it every year or so and other than

We've used Redmine around ten years now (I'm the person who brought it in and set it up) and it's been rock solid. I upgrade it every year or so and other than that, don't touch it. We run everything in the standard configuration and as a general rule do not install any plugins because they can cause a lot of problems, especially during upgrade time.