🇦🇹 Grommunio

Vienna, AT
https://grommunio.com

Open-source groupware and communication

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Offerings

Communication Infrastructure → Collaboration Platforms

Price: Contact sales
Free tier: Yes — Open source community edition
API: Yes — REST API, EWS, CalDAV/CardDAV
Docs: Moderate
Open-Source GDPR Groupware Austrian
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Communication Infrastructure → Office Suites

Price: Contact sales
Free tier: Yes — Open source grommunio Office
API: Yes — REST API
Docs: Moderate
Open-Source Austrian Groupware LibreOffice-Based
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Communication Infrastructure → Video Conferencing

Price: Contact sales
Free tier: Yes — Open source with video component
API: Yes — REST API, Jitsi integration
Docs: Moderate
Open-Source Austrian Groupware GDPR
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Communication Infrastructure → Shared Calendars

Price: Contact sales
Free tier: Yes — Open source with CalDAV
API: Yes — CalDAV, REST API
Docs: Moderate
Open-Source CalDAV Austrian Groupware
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