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
In what regard?
That the project will be developed in a year or two
Maybe check how long it is already going, so it can give you some confidence. Forgejo is a fork of gitea, which is a fork of gogs.
Also, codeberg, a nonprofit from Germany, is supporting development.
https://docs.codeberg.org/getting-started/what-is-codeberg/