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EGroupware is free open source groupware software intended for businesses from small to enterprises.

Zimbra is trusted by over 500 million users to increase productivity with a complete set of collaboration tools while maintaining total control over security and privacy.

Work smarter, not harder. Save 1 day/week with free customizable workflows. Get access to 40+ workflow templates such as Employee Recognition & Engagement. Simplify your day-to-day workflows, increase team productivity & add simplicity to your work.

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Telegram is a messaging app with a focus on speed and security. It’s superfast, simple and free.

Open Source

Open-Xchange Server 6 is the most advanced Linux based Groupware solution f.

Group-Office is an enterprise CRM and groupware tool.

Open Source

Kolab Groupware is a secure, scalable, reliable, flexible, full-featured collaboration suite.

Microsoft Teams provides the enterprise-level security, compliance and management features you expect from Office 365, including broad support for compliance standards, and eDiscovery and legal hold for channels, chats, and files.

Zoho is an all-in-one online office suite.

Microsoft Office is an office suite of desktop applications, servers, and services for the Microsoft Windows and OS X operating systems.

OBM is a free messaging and collaboration platform useful for just a couple to many thousands of users with strong support for mobile devices.

A messaging app for teams who see through the Earth!

Web-based IMAP email client

Open Source

Organize your world. Outlook’s email and calendar tools help you communicate, stay on top of what matters, and get things done.