We are changing our system. We settled on git (but are open for alternatives) as long as we can selfhost it on our own machines.
Specs
Must have
- hosted on promise
- reliabile
- unlikely to be discontinued in the next >5 years
- for a group of at least 20 people
Plus
- gui / windows integration
The company behind GitLab is seeking buyout offers, so make of that what you will.
My employer uses GitLab CE and it’s pretty good, and it is FOSS. The EE version is “open core” so not really FOSS.
If I were starting from scratch I’d be looking into Gitea/Forgejo as well.