Zimbra Collaboration is a leading open-source email and collaboration platform.
Pros
- Robust email and collaboration features
- User-friendly interface
Cons
- Paid plans can be expensive for larger organizations
Free and paid plans available
Best Kolab Community Alternatives ranked by AI · updated May 2025
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Kolab Community is an open-source groupware solution that includes email, calendar, contacts, tasks, and more.
Price: Free
🎯 kolab.org
Top 6 Kolab Community alternatives
Nextcloud is a self-hosted file sync and share server designed to be easy to use and secure.
Pros
- Easy to use
- Strong security features
- Rich collaboration tools
Cons
- Can be resource-intensive
- Limited integration options
Free and paid plans available
ONLYOFFICE is a comprehensive office suite that includes document editing, collaboration, and project management tools.
Starting from $5.40 per user per month
Microsoft Office 365 is a suite of productivity applications that includes Word, Excel, PowerPoint, Outlook, and more, offered as a subscription service.
Starting from $5 per user per month
Google Workspace is a suite of cloud computing, productivity and collaboration tools, software and products developed by Google.
Starting from $6/user/month
LibreOffice is a free and open-source office suite that offers a range of applications for word processing, spreadsheets, presentations, and more.
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