Google Hangouts, one of the best communication software out there

Google Hangouts is being used as our primary communication platform for meetings, meetups, talks, webinars, seminars, etc. The user interface feels clean, well-designed, and intuitive. It supports multi-platform integration and wraps well around Google's fleet of productive tools. The audio/video quality is superb. There is also a chat feature that is useful for quick communication. The only problem we face is it supports a limited number of attendees. Also, we are concerned about how our data may be used there. It would be great if Google offered a self-hosting option. Overall, it is a fine tool to work with and it's free.