Best for self-hosting files, calendar and contacts
License: Open source
Windows
macOS
Linux
Web
iOS
Android
Self-hosted
Status: Unknown
You run the server or pay a host. Email needs a separate mail service, so it replaces the storage and collaboration parts of Workspace. Free version: The Nextcloud server is free to self-host. Enterprise subscriptions with support start at 71.29 EUR per user a year (100 users).
Situational
2 tools
Right for specific needs, or not yet mature enough to recommend widely.
The free plan is email only, with 5 GB per user, no IMAP or POP and no file storage. Paid Workplace plans add the other apps. Free version: Free Mail plan: up to 5 users, one domain, 5 GB mail each, no file storage and no IMAP or POP.
Covers the Gmail part only. Apps are open source and end-to-end encrypted, but the free plan stores only 500 MB to 1 GB of mail. Free version: Free: 1 user, 1 email address and 500 MB of mail storage, rising to 1 GB by completing the Get started checklist.
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Feature parity
How each alternative covers what people use Google Workspace for. Numbers link to editor notes.
Nextcloud, Business email on a custom domain: Mail is a client only; it needs your own mail server
Zoho Workplace, Business email on a custom domain: Free Mail plan supports one custom domain for up to 5 users
Proton Mail, Business email on a custom domain: Custom domains need a paid plan; the free plan has one address
Nextcloud, Docs, Sheets and Slides with live co-editing: Office editing needs Collabora Online or ONLYOFFICE as a separate server
Zoho Workplace, Docs, Sheets and Slides with live co-editing: Document apps come with paid Workplace plans
Proton Mail, Docs, Sheets and Slides with live co-editing: Proton Mail alone has no document apps
Nextcloud, Cloud storage and file sharing: Self-hosted file storage with desktop and mobile sync clients
Zoho Workplace, Cloud storage and file sharing: The free plan has no file storage
Proton Mail, Cloud storage and file sharing: The free plan has 500 MB of mail storage, rising to 1 GB
Nextcloud, Video meetings: Talk handles calls; large calls need extra components
Zoho Workplace, Video meetings: Meetings are part of paid plans
Proton Mail, Video meetings: No video meetings
Nextcloud, Shared calendars and contacts: Calendar and Contacts apps with CalDAV and CardDAV sync
Zoho Workplace, Shared calendars and contacts: Calendar and contacts come with Zoho Mail
Proton Mail, Shared calendars and contacts: Calendar and contacts are part of a Proton account
Nextcloud, Admin console and single sign-on: Admin settings, groups and quotas; single sign-on through apps
Zoho Workplace, Admin console and single sign-on: Admin console for up to 5 users
Proton Mail, Admin console and single sign-on: The free plan is for one user
Not covered by any free alternative yet: Docs, Sheets and Slides with live co-editing, Video meetings, Admin console and single sign-on. See all feature gaps
What switching saves
Switching saves about $84 USD / ≈$120 CAD (estimated from the USD price) a year.Prices checked ; ≈ means converted from USD.
Based on Google Workspace Business Starter, per user, annual plan. Price source. USD to CAD at 1.4257 as of Oct 7, 2026.
About this page
Last verified . Ranking: tier first, then the published score.