How we think
Who we are
OpenTalk
OpenTalk has been developed by the Berlin-based company Heinlein Support, with 30 years of experience in the design and operation of secure electronic communication. Know-how and passion for open source unite our team. Transparency and integrity are our shared values. Data protection and digital sovereignty are the essence of our DNA.
What does that mean for you? We are partners on an equal footing and will make your goals our own. What began as a project for the city of Berlin with the development of a city-wide video conferencing platform has now led to the development of OpenTalk, a solution that provides what businesses, political organizations, authorities and schools need.
Our Background
Heinlein Support GmbH
The mother ship with more than 60 employees. We are Linux and open source experts and operate our own data centers. We also provide 24/7 support for other administrators. We design customized solutions, offer honest advice, and practical hands-on help.
mailbox.org
E-mail, cloud solutions and hosting that uses the latest security standards, powered by green energy. This is how secure and free communication works for businesses, private individuals, and also many teachers and educational institutions. mailbox.org was founded in 2014 and has won multiple awards since.
„With OpenTalk we have thought video conferencing new and to the end. Sophisticated features, a modern IT architecture and open source. That's what drives us.“
Gründer und CEO
News
OpenTalk at the Chemnitz Linux Days 2025
OpenTalk will be represented at the joint Heinlein Group stand together with Heinlein Support, OpenCloud and mailbox.org.
The time for digital sovereignty is now.
The geopolitical situation is coming to a head and making Europe's dependence on foreign technology providers more apparent than ever. This development not only jeopardizes the security of sensitive data, but also highlights the importance of true digital sovereignty for Europe.
Heinlein Akademie: OpenTalk Enterprise Administration
Heinlein Akademie is expanding its training programme to include the practical course ‘OpenTalk Enterprise Administration’ for professional operation of OpenTalk.
OpenTalk, Open Source and Open Minds.
We are currently looking for new colleagues who would like to work full time, e.g. as a Rust Developer, Frontend Developer or QA Manager.
