Google Workspace is not available as a self-hosted solution but there are some alternatives for power users and business that want to host a solution on-premise. The best Self-Hosted Team Collaboration Tool alternative is CryptPad, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 50 alternatives to Google Workspace and five of them are Team Collaboration Tools available as a self-hosted solution so hopefully you can find a suitable replacement. Other interesting Self-Hosted Team Collaboration Tool alternatives to Google Workspace are Nextcloud Hub, Zimbra Collaboration Suite, Axigen and Linchpin.
CryptPad is a private-by-design alternative to popular office tools and cloud services. All the content stored on CryptPad is encrypted before being sent, which means nobody can access your data unless you give them the keys.
Nextcloud is the most deployed on-premises file share and collaboration platform. Access & collaborate across your devices. As fully on-premises solution, Nextcloud Hub provides the benefits of online collaboration without the compliance and security risks.
Zimbra 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.
Axigen provides a multi-tenant, fully integrated, multi-platform, all-in-one email, calendaring and collaboration messaging solution. It grants extensive branding options and is localized in over 29 languages (including right-to-left writing mode).
Linchpin is an efficient social intranet platform that focuses on effective collaboration and reduces complexity by means of user-specific customization.
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It protects your privacy. Keep your data yours! Also, it doesn't just drop products at random times...