OpenTalk is a video conferencing software from Germany. OpenTalk is part of the German Heinlein Gruppe, which also owns the email provider mailbox.org. OpenTalk is open source under the EUPL (European Public License), which is similar to the GPL, but specifically made for the legal framework in the European Union. The tool offers break-out rooms, a voting system and the ability to moderate with multiple people. OpenTalk also offers On-Premise hosting with a Enterprise version and support.

Nextcloud Talk is a privacy-friendly open-source video conferencing and team collaboration solution. Nextcloud Talk enables secure collaboration for hybrid teams and improves productivity and connectivity from anywhere. Without lock-in effects and dependency on proprietary providers, its flexible open-source architecture enables customization to the specific needs of companies and seamless integration into existing systems. Nextcloud Talk is part of the Nextcloud Hub a self-hostable platform for companies and private customers.