I've started a couple of small free open source software projects and am working on the technical infrastructure that supports communication, project planning, source code hosting, etc for these projects.
After looking around I've found some software which would be useful for supporting the projects, for example Mattermost and GNU Mailman, but i havn't found a good way to use them in practice.
I'm a developer (not a system administrator) and would like to spend my time on programming, rather than on setting up these systems on my own webserver.
I could use proprietary software (like google groups and slack) but would rather use free open source software.
My question is: Is there any organization that provides hosting for the technical infrastructure for supporting open source projects, and where the software that they host is itself open source?
I'm looking for a place where a whole package of technical infrastructure could be hosted, including communication, project planning, source code hosting, bug tracking, etc.
I am ready to pay a small amount (max 5 euro/month) if necessary and if multiple projects are supported
Grateful for help and with kind regards, Tord