This app is tailored for families, couples, friends, and groups, providing end-to-end encryption for secure data, seamless calendar creation, syncing, private chats, and widgets for easy access, ensuring you never miss an event.
United Kingdom
+3
Kolab Alternatives
Kolab is described as 'Provides a FOSS communication & collaboration solution that can be completely self-hosted. Take back control of your data and access it via the webinterface, or existing mobile & desktop clients' and is a Calendar app in the office & productivity category. There are more than 50 alternatives to Kolab for a variety of platforms, including Web-based, Linux, Android, Windows and Self-Hosted apps. The best Kolab alternative is Microsoft 365 Copilot, which is free. Other great apps like Kolab are Google Calendar, Fossify Calendar, Roundcube and Google Workspace.
Alternatives list
46 Zimbra Collaboration Suite alternativesZimbra Collaboration is an open, secure collaboration tool for email, calendaring, tasks and more. With the most innovative web application available today, Zimbra boosts the productivity of users on any desktop and dramatically reduces TCO compared to legacy platform vendors.
Kopano puts an email, video meetings, calendaring, and file sharing solution within one single interface.
Cost / License
- Paid
- Proprietary
Application types
Platforms
- Online
- Software as a Service (SaaS)
15 grommunio alternativesgrommunio (formerly known as grammm) efficiently combines all requirements of modern, digital communication and collaboration.
Cost / License
- Freemium
- Open Source
Application types
Platforms
- Mac
- Windows
- Linux
- Online
- Android
- iPhone
- iPad
- Self-Hosted
20 OX App Suite alternativesThe OX App Suite by Open-Xchange is web-based platform offering a suite of apps like an email client, calendar, contacts magement, cloud storage with synchronization and productivity apps for word processing, spreadsheets and presentations.
Cost / License
- Free
- Open Source
Application types
Platforms
- Linux
- Online
- Self-Hosted
- Software as a Service (SaaS)
+6
IceWarp integrates all communication & collaboration features in one unified solution. Available in cloud or for on-premises deployment, IceWarp is a great tool to share and exchange all information and ideas online, offline or via mobile devices.
Cost / License
- Paid
- Proprietary
Application types
Platforms
- Windows
- Linux
- Online
- C
Atmail webmail system offers a webmail client, email server platform and mailserver appliance for Linux, Unix and Windows.
OBM is a free messaging and collaboration platform useful for just a couple to many thousands of users with strong support for mobile devices.
Cost / License
- Free
- Open Source
Application types
Alerts
- Discontinued
Platforms
- Linux
Web-based team collaboration suite combining email client, calendar, contact and task tools, CRM, project and file management, file sharing, trouble tickets, Rocket.Chat chat, and Collabora online editing. Offers open source, self-hosted, and SaaS options.
Cost / License
- Freemium
- Open Source (GPL-2.0)
Application types
Platforms
- Linux
- Online
- Self-Hosted
- Software as a Service (SaaS)
+6
Real-time email, chat, audio/video calls & conferences, file-sharing, and contacts app with a modern and intuitive UI.
Cost / License
- Paid
- Proprietary
Application types
Platforms
- Online
- Android
- iPhone
- Android Tablet
- iPad
- Self-Hosted
+9
27 Nexmail alternativesNexMail is an open-source, modern webmail client designed for self-hosted email servers. Enjoy a clean, intuitive interface with powerful features for managing your emails efficiently.
+8
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