Open-source alternative to Google Docs and Sheets

Which Google Docs and Sheets capabilities each open-source editor covers

This table maps the core Google Docs and Sheets capabilities to Collabora Online, ONLYOFFICE Docs and the Nextcloud file layer that hosts them. Read the rows marked as gaps or items to confirm first, because those are where a pilot with your own documents usually changes the plan. The main takeaway is that the editors cover most day-to-day editing, while Google-specific features and some admin and version history depth need checking before you commit.

When Collabora Online or ONLYOFFICE Docs fits better

Both options run in your own infrastructure and open .docx, .xlsx and .pptx files in the browser, so the choice comes down to licensing, edition limits, format fidelity and how much operating effort your team can carry. The cards below set out the decision points for each product so you can test them against your own requirements.

Running self-hosted editors alongside Google Workspace

Moving Docs and Sheets files out of Google Drive

This sequence turns native Google Docs and Sheets into editable Office or OpenDocument files, checks that content survived the conversion, and moves users onto the self-hosted editor with their sharing and comments rebuilt.

1. Inventory native Docs, Sheets and Slides files

   The Google Workspace admin or a delegated migration owner lists every native Google Docs, Sheets and Slides file in scope, grouped by owner, shared drive and folder. Native files are the ones that need conversion, because uploaded Office files already exist in a portable format. Record file count, owner, last modified date and whether the file is shared outside the organization. The inventory is done when every owner has been mapped to a target folder in the new platform and the list of files that will not be migrated has been agreed in writing with the business owners.

2. Export files with Takeout or Data Export

   Choose the export path that fits the scope. Individual users can run Google Takeout for their own Drive documents, and Workspace administrators control whether users can use it. For the whole organization, a super administrator runs the admin Data Export, which writes zip files to a Cloud Storage bucket. Confirm the admin account meets the account age requirement, and plan around the reported run time, which can take up to 14 days. Download the archives before the default bucket is deleted after 60 days. The step is complete when every archive has been downloaded, checksummed and unpacked to a staging location.

3. Convert to docx, xlsx or OpenDocument

   Google exports native documents as Office or OpenDocument formats when you choose them, so pick one target per file type and keep it consistent. Use docx for documents, xlsx for spreadsheets and pptx or ODP for slides, or choose ODF if the organization standardizes on OpenDocument. Run the conversion in a staging environment with the same editor version you will use in production. Keep the original Google export alongside each converted file so you can compare them later. The step is complete when a conversion log lists every file, its target format and any file that failed to convert.

4. Check formatting, formulas and charts

   Open a sample of converted documents and spreadsheets in the target editor, starting with the most complex files. Compare page breaks, fonts, headers, tables of contents, embedded images and charts. In spreadsheets, check formulas, named ranges, data validation, conditional formatting and pivot tables, since function support can differ between Google Sheets and the editors. Log each defect with the file name and a severity. Adjust the most common patterns in a template or a conversion rule and rerun the affected files. The step is complete when the agreed sample passes and every remaining defect has an owner and a documented workaround.

5. Rebuild comments, suggestions and sharing

   Exported files carry content, but sharing permissions, link settings and some comment threads do not map one to one to the new platform. Recreate shared folders and group permissions in the target system, then reapply access for each file based on the inventory. Decide with business owners whether open comment threads must be carried over as text, copied into a notes section, or closed before cutover. Confirm that external sharing links are replaced with new links that point to the target platform. The step is complete when an access review shows that each migrated file is visible to the same people as before, and no unintended external access has been granted.

6. Import and validate in the target platform

   Upload the converted files into the self-hosted platform, typically a Nextcloud instance connected to Collabora Online or ONLYOFFICE Docs, and keep the original folder structure. Open each file in the browser editor to confirm it loads, saves and co-edits correctly. Test a document opened by two users at once, and confirm that version history is present on a sample of files. Verify that the editor is reachable through the WOPI integration for every user group. The step is complete when the validation checklist is signed off and the import log matches the inventory count.

7. Cut over users and retire Google access

   Announce a cutover window to each team, with clear instructions for where files now live and how to request access to anything missing. Freeze edits to the source files in Google Drive for the migrated scope, then run a final delta export for files changed since the first export. Move bookmarks, shortcuts and links in internal wikis to the new locations. After users confirm they can work in the new platform, remove Google Drive access for migrated owners and keep the archived exports under your retention policy. The step is complete when users have signed off, the delta export is imported, and the archive location and retention rule are documented.

What co-editing scale and operations demand from your team

Questions buyers ask before replacing Google Docs and Sheets

Decisions that determine whether the move succeeds

Document editing is where a Google Docs and Sheets replacement is most often judged, and most of the risk sits in a few decisions made before rollout. The cards below cover licensing, support, spreadsheet fidelity, sharing, adoption and upgrades, each with the question to put to the vendor or to test in your own environment.

How DeployOpen scopes an editor migration

The sequence turns an editor choice into a written, fixed-scope plan, a tested environment inside your infrastructure, and a cutover where Google Docs and Sheets files open, edit and save correctly for your users. Each step ends with a document or check that the next step depends on.

1. Agree the written scope and deliverables

   DeployOpen and your team start by listing the editors in scope (Writer-style documents, Calc-style spreadsheets, or both), the file types you must keep editable, the expected concurrent co-editors, the identity and storage platform that will host the editor, and the systems that must be integrated. The output is a written scope with named deliverables and acceptance criteria, signed before work begins. Ask for the fixed-scope terms in writing, including what is excluded, such as custom macro rewrites or add-on development.

2. Confirm the target platform and licensing

   Before building anything, confirm the editor and host platform licensing with each vendor, including whether the community or enterprise edition is required for your user count, support hours and security update commitments. Confirm the current release, supported database and PHP versions, and the upgrade path for the host platform. The output is a short decision record that names the chosen editor, edition and support model, so the architecture and any quote rest on verified facts.

3. Build the environment in your infrastructure

   DeployOpen builds the editor service inside your cloud account, data center or air-gapped network, with the document server, the host platform, authentication, storage and TLS configured to your standards. For Kubernetes deployments, the team sizes replicas and sets routing so that all users editing one document reach the same pod, since autoscaling is not safe for collaborative sessions. The output is a documented, reproducible deployment with configuration kept in version control and no traffic leaving your boundary.

4. Test formats and co-editing

   DeployOpen runs a test plan built from your real file population, using copies of representative documents and spreadsheets exported from Google Docs and Sheets. Testers open, edit, comment, track changes, save and reopen files in Office Open XML and OpenDocument formats, then check formulas, fonts, tables, images, comments and version history. Co-editing tests run with multiple simultaneous users, including the load level you specified. The output is a signed test report listing every failed case, its severity and the agreed fix or accepted limitation.

5. Remediate and harden the deployment

   Failed test cases are fixed within the agreed scope. Typical work includes adjusting font packages, conversion settings, file size limits, timeouts and access controls, and applying hardening that your security team has specified, such as restricted outbound network access, logging and backup of the document store. The output is a configuration baseline and a change log that your team can review and reproduce during a later upgrade.

6. Plan and rehearse the cutover

   DeployOpen and your team agree a cutover plan that moves the Google Docs and Sheets export into the new store, sets the redirect or link policy for shared files, and defines the rollback steps. The rehearsal runs on a copy of production data, and the team checks that document links, permissions and version history behave as expected. The output is a rehearsed runbook with a named go or no-go decision owner. Google-side export timing and bucket retention are covered in the separate export guide.

7. Cut over and hand over documentation

   On the agreed date, the team switches users to the new editor, monitors logs and performance during the first working period, and resolves issues under the fixed-scope terms. DeployOpen then hands over architecture notes, runbooks, backup and restore procedures, and the test evidence. The output is a signed handover. DeployOpen prepares systems, controls and evidence for compliance reviews, but it does not issue audit reports or certifications; independent auditors and certification bodies do that work.

8. Decide on an optional retainer

   After handover, you can choose a retainer for ongoing support, upgrades, patch testing and periodic format regression tests. The scope of a retainer is written separately and priced from its own terms, so ask for the response commitments, the upgrade cadence and the testing scope in the quote. Recurring costs will include vendor subscriptions where you choose a supported edition, plus the retainer if you buy one. The output is an agreed support calendar that keeps the editor current with its releases.