Pack - Makes it simple to find the best roommates.
Ring4 Meeting - Dead simple video conferencing - free, in browser
Roomr - Discover great people to live with
Stork.ai - AI-Based Collaboration for Hybrid Teams. Rich media messaging, advanced video and voice conferencing, auto-transcribing and screen sharing. Serendipitous meetings at the water-cooler with your human and AI teammates.
OurFlat - Groceries, bills, calendar, chores & chat for any household.
openmeet - Account free video conferencing with a rooms component that lets you use VC within a physical meeting room. The server can also be hosted in your own cloud for extra privacy/security.