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eGroupWare is an open-source groupware and business collaboration platform for organizations managing email, calendars, contacts, files, projects, and customer data. It supports self-hosting and hosted deployments, with integrated project management and CRM features.
💡 Pick it for a broader self-hosted file collaboration ecosystem and a larger third-party app marketplace.
Nextcloud is a self-hosted file sync and share server designed to be easy to use and secure.
Free and paid plans available
💡 Pick it for polished Office integration, enterprise administration, and dependable cloud hosting.
Microsoft 365 is a subscription-based service that provides access to various Microsoft apps and services like Word, Excel, Outlook, Teams, and more.
Starting from $5 per user per month
💡 Pick it for effortless browser collaboration and minimal infrastructure management.
Google Workspace is a suite of cloud computing, productivity and collaboration tools, software and products developed by Google.
Starting from $6/user/month
💡 Pick it when email, calendaring, and administrative control matter more than integrated CRM.
Zimbra is an enterprise-class email, calendar, and collaboration solution built for the cloud, both public and private.
Starting at $6 per mailbox per year
💡 Pick it for scalable hosted groupware operated by a business or communications provider.
Open-Xchange is a cloud-based collaboration software with email, calendar, and file sharing.
Subscription-based pricing
💡 Pick it for a lightweight, standards-based, open-source email and calendar platform.
SOGo is a fully-featured collaboration suite with focus on scalability and simplicity.
Free and paid versions available
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