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Ring4 Meeting - Dead simple video conferencing - free, in browser
Helium - Helium lets you accept payments by credit card for anything you want to sell online.
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.
PiPer - A DIY Minecraft computer to build gadgets
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.
Pennywise - Cross-platform application to open any website or media in a floating window