OpenTalk key facts
Last updated- Legal entity
- OpenTalk GmbH
- Headquarters
- Germany (DE)
- Ownership
- Part of Heinlein Gruppe
- Data hosting
- Germany
- Infrastructure
- German data centers (Heinlein Gruppe)
- Open source
- No
- US Cloud Act exposure
- Low (no US parent)
- Certifications
- BSI IT Security Label (IT-Sicherheitskennzeichen)
- Replaces
- Zoom, Microsoft Teams, Webex, Google Meet
About OpenTalk
OpenTalk is a secure video conferencing platform developed in Germany, designed as a sovereign alternative to US-based communication tools. It emphasizes privacy, open-source transparency, and user-friendliness. The platform is specifically tailored for sectors with high security requirements, including the public sector, educational institutions, and businesses seeking digital independence. The service is available as a SaaS cloud solution hosted in German data centers or as an on-premises installation for maximum control over data. It includes professional moderation tools such as sub-room audio, automated meeting minutes, and specialized features like 'the talking stick' and moderated break management. OpenTalk has received the IT security label from the German Federal Office for Information Security (BSI).
Alternative to
Hosting & Security
German data centers (Heinlein Gruppe)
Key Features
Related Articles
All articlesEuro-Office 1.0: Europe's New Open-Source Answer to Microsoft 365
Released on 9 June 2026, Euro-Office is an AGPL-licensed office suite forked from ONLYOFFICE and backed by Nextcloud, IONOS, and Proton. It gives businesses and public bodies a fully sovereign alternative for document collaboration.
11 Jun 2026Country GuidesAustria's Sovereign Software Landscape: 10 Alternatives You Should Know
Austria has quietly built a remarkable portfolio of sovereign software companies. From open-source virtualisation to AI research and encrypted document management, here are the Austrian-built tools challenging US tech giants.
25 Mar 2026GuidesHow to Build a Fully Sovereign European SaaS Stack
A practical guide to replacing every major US SaaS tool with a European alternative, from email to analytics to project management.
30 Jan 2026