Open-source alternatives guide · Updated 2026
Compare the best free and open-source alternatives to Google Workspace — 5 verified projects with explicit catalog relationships. Inspect licenses, GitHub activity, self-hosting signals, and migration fit before you switch.
Official product reference Google Workspace↗Only explicit alternative relationships are shown—never inferred competitor claims.
This guide compares 5 verified open-source alternatives to Google Workspace, including Paperless-ngx, CryptPad, Tuta, and ONLYOFFICE.
Projects appear across Data & Analytics, Productivity, and Security & Privacy. Ranking follows public GitHub stars and recorded momentum—not vendor marketing. Compare projects side by side, then confirm license fit, migration effort, and operational ownership before adopting any option.
Strongest repository-activity signal: Paperless-ngx · Jump to ranking · 43.1K stars
Proprietary Google productivity and collaboration suite.
Visit Google WorkspaceCompare capabilities, licensing, and ownership model. Stars help with discovery; they are not a security or product-fit guarantee.
Open-source alternative to Google Workspace
A community-supported supercharged document management system: scan, index and archive all your documents
A community-supported supercharged document management system: scan, index and archive all your documents Review the official repository, license, release activity, and deployment
Collaborative office suite, end-to-end encrypted and open-source.
Collaborative office suite, end-to-end encrypted and open-source. Review the official repository, license, release activity, and deployment documentation before production adoption
Open-source alternative to Google Workspace
Tuta is an email service with a strong focus on security and privacy that lets you encrypt emails, contacts and calendar entries on all your devices.
Tuta is an email service with a strong focus on security and privacy that lets you encrypt emails, contacts and calendar entries on all your devices. Review the official repository
ONLYOFFICE Docs is a free collaborative online office suite comprising viewers and editors for texts, spreadsheets and presentations, forms and PDF, fully compatible with Office Open XML formats: .docx, .xlsx, .pptx and
ONLYOFFICE Docs is a free collaborative online office suite comprising viewers and editors for texts, spreadsheets and presentations, forms and PDF, fully compatible with Office Op
Read-only LibreOffice core repo - no pull request (use gerrit instead https://gerrit.libreoffice.org/) - don't download zip, use https://dev-www.libreoffice.org/bundles/ instead
Read-only LibreOffice core repo - no pull request (use gerrit instead https://gerrit.libreoffice.org/) - don't download zip, use https://dev-www.libreoffice.org/bundles/ instead R
Map must-have capabilitiesList the workflows in Google Workspace you cannot drop during migration.
Verify the licenseConfirm it fits your use, distribution, and compliance model. Browse license briefs.
Run a proof of conceptTest real data, integrations, clients, and failure modes. Use Compare for side-by-side checks.
Plan ownershipAssess upgrades, backups, support, and an exit path. Read when self-hosting is worth it.
OpenSourceChoice currently lists 5 projects with an explicit alternative relationship to Google Workspace. Catalog highlights include Paperless-ngx, CryptPad, and Tuta. Rankings follow public GitHub stars and recorded momentum—not paid placement. Match capabilities and license fit to your workflow before adopting any option.
Most catalogued alternatives publish source under OSI or source-available licenses and are free to inspect. Hosting, commercial support, or cloud model APIs may still cost money. Always read the project license for your use case.
Some open-source replacements support self-hosting or local deployment; others are libraries or clients without a server component. Check each project’s deployment docs rather than assuming a drop-in hosted twin.
Map must-have Google Workspace workflows, verify license and compliance fit, run a proof of concept with real data and integrations, then plan ownership for upgrades, backups, support, and an exit path.
Narrow the same alternatives by search, license, tags, or self-hosting signals when you need a tighter shortlist.
A community-supported supercharged document management system: scan, index and archive all your documents
Data & AnalyticsOpen-source projects grouped in this category for discovery and comparison.#
PythonProjects tagged with this topic in the verified catalog.
Github ActionsProjects tagged with this topic in the verified catalog.
JavaScriptProjects tagged with this topic in the verified catalog.
AI-nativeThis project includes AI-native capability signals in the catalog metadata.
Google WorkspaceProprietary Google productivity and collaboration suite.Collaborative office suite, end-to-end encrypted and open-source.
ProductivityOpen-source projects grouped in this category for discovery and comparison.#JavaScriptProjects tagged with this topic in the verified catalog.Github ActionsProjects tagged with this topic in the verified catalog.
NodeJSProjects tagged with this topic in the verified catalog.Google WorkspaceProprietary Google productivity and collaboration suite.Tuta is an email service with a strong focus on security and privacy that lets you encrypt emails, contacts and calendar entries on all your devices.
Security & PrivacyOpen-source projects grouped in this category for discovery and comparison.#
TypeScriptProjects tagged with this topic in the verified catalog.Github ActionsProjects tagged with this topic in the verified catalog.JavaScriptProjects tagged with this topic in the verified catalog.Google WorkspaceProprietary Google productivity and collaboration suite.
LatviaAGPL-3.0ONLYOFFICE Docs is a free collaborative online office suite comprising viewers and editors for texts, spreadsheets and presentations, forms and PDF, fully compatible with Office Open XML formats: .docx, .xlsx, .pptx and
ProductivityOpen-source projects grouped in this category for discovery and comparison.#
ShellProjects tagged with this topic in the verified catalog.Github ActionsProjects tagged with this topic in the verified catalog.BashProjects tagged with this topic in the verified catalog.Google WorkspaceProprietary Google productivity and collaboration suite.
GermanyGPL-3.0Read-only LibreOffice core repo - no pull request (use gerrit instead https://gerrit.libreoffice.org/) - don't download zip, use https://dev-www.libreoffice.org/bundles/ instead
Content & CollaborationOpen-source projects grouped in this category for discovery and comparison.#
C++Projects tagged with this topic in the verified catalog.Github ActionsProjects tagged with this topic in the verified catalog.JavaScriptProjects tagged with this topic in the verified catalog.Google WorkspaceProprietary Google productivity and collaboration suite.
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