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What is Kolab?

Kolab is a FOSS communication & collaboration solution that can be completely self-hosted, and allows you to maintain control over your most sensitive data.

Kolab integrates various components to provide you with a wide range of features:

  • Being able to send & receive email including:
    • spam filtering
    • virus scanning
    • Support for important protocols that ensure secure email delivery (DKIM/DMARC/SPF)
  • A variety of access protocols:
    • IMAP/SMTP
    • ActiveSync
    • CalDAV/CardDAV
  • A webmail client that includes advanced calendaring/tasks/addressbook
  • A webrtc based video chat solution
  • File storage
  • Collaborative editing of documents

In short, it provides everything that a company/family/... needs to work and communicate together, while maintaining full control over all data.

Other features:

  • Kolab makes extensive use of open protocols and standards, where available, to avoid vendor lock-in, and improve interoperability
  • Kolab is built exclusively on open source software, and can be built from source.
  • The Kolab Web-Clients do not load data from any external sources and are fully self-reliant, which makes them suitable to be used in air-gapped environments and avoids any tracking.