Chose Nextcloud
PIM and file sharing are the same as you get in Google's Drive/Calendar. With extensions, you can also implement web meetings (e.g., by using Jitsi), but this comes with more administrative effort. In the end, this comes down to how big of a user/customer base you are …
Independently Invited by TrustRadius
A de minimis incentive was given to thank the reviewer for their time. The incentive was not used to bias or drive a particular response, nor was the incentive contingent on a positive endorsement. More Info