Google Hangouts vs Jitsi: What are the differences?
Developers describe Google Hangouts as "A communication platform". Message contacts, start free video or voice calls, and hop on a conversation with one person or a group. On the other hand, Jitsi is detailed as "Multi-platform open-source video conferencing". Jitsi is a set of open-source projects that allows you to easily build and deploy secure videoconferencing solutions. At the heart of Jitsi are Jitsi Videobridge and Jitsi Meet, which let you have conferences on the internet, while other projects in the community enable other features such as audio, dial-in, recording, and simulcasting.
Google Hangouts and Jitsi can be categorized as "Web and Video Conferencing" tools.
Jitsi is an open source tool with 1.94K GitHub stars and 630 GitHub forks. Here's a link to Jitsi's open source repository on GitHub.