self-hosted collaboration

What self-hosted stack can realistically replace Microsoft 365 for 100–160 users?

We're evaluating whether to replace Microsoft 365 with a fully self-hosted collaboration and groupware environment for five companies. The main drivers are data sovereignty and reducing dependence on…

Should I switch from Microsoft Teams because of unreliable iPhone notifications?

I run a small business with about 10 employees and expect the team to grow over the next few months. We currently use Microsoft Teams, but notifications on…