OpenTalk.eu is a secure, open-source video conferencing platform developed by Heinlein Support GmbH, a Berlin-based company. It is designed to provide digital sovereignty, productivity, and data protection, making it suitable for businesses, public authorities, educational institutions, and providers. OpenTalk offers features like multiple host meetings, automated speaker line-ups, audit-proof voting, breakout rooms, and sub-room meetings, ensuring efficient and secure digital collaboration