What are the key differences between Zimbra Open Source and Kolab Now?

Compare Zimbra Open Source and Kolab Now side by side on Lunoo to see detailed feature differences, AI scores, and expert analysis.

How are Zimbra Open Source and Kolab Now scored?

Zimbra Open Source has an AI score of 7.2/10 and Kolab Now has an AI score of 6.2/10. Scores are based on features, user satisfaction, and overall quality analysis.

Zimbra Open Source vs Kolab Now 2026 — Compared

Zimbra Open Source

Kolab Now

WINNER Zimbra Open Source

Zimbra Open Source edges ahead with a score of 7.2/10 compared to 6.2/10 for Kolab Now. While both are highly rated in t...

emoji_events WINNER

Zimbra Open Source

7.2 Good

Communication Get Zimbra Open Source open_in_new

Kolab Now

6.2 Fair

Email Marketing Tool Get Kolab Now open_in_new

Zimbra Open Source From $10/user/month (Enterprise Edition) Free plan available

payments

Kolab Now Pricing not available

psychology AI Verdict

Zimbra Open Source edges ahead with a score of 7.2/10 compared to 6.2/10 for Kolab Now. While both are highly rated in their respective fields, Zimbra Open Source demonstrates a slight advantage in our AI ranking criteria. A detailed AI-powered analysis is being prepared for this comparison.

emoji_events Winner: Zimbra Open Source

verified Confidence: Low

Ready to decide? Get Zimbra Open Source arrow_forward

description Overview

Zimbra Open Source

Zimbra is an open-source groupware suite that includes email, calendar, and contact management functionalities. It supports sales automation through its integration capabilities and user-friendly interface. Suitable for businesses needing a comprehensive communication solution.

Kolab Now

Kolab Now is a Swiss-based service that focuses on groupware and collaboration. It is built on the open-source Kolab platform, which is designed for teams that need to work together securely. It includes email, calendars, contacts, and file sharing, all hosted in Switzerland. It is an excellent choice for organizations that want to move away from Google Workspace or Microsoft 365 while maintaining...