LibreOffice vs Collabora Online
Both are alternatives to Microsoft 365. Here's how they stack up — verified facts, no spin.
Also searched as Collabora Online vs LibreOffice — same comparison, one verdict.
LibreOffice and Collabora Online are closely matched on ownership (100 vs 95) — this one comes down to pricing and to which trade-offs below you can live with.
LibreOffice
TOP PICKThe mature, fully open-source desktop office suite that runs entirely on your own machine.
LibreOffice is the most complete free desktop office suite and the closest all-round replacement for the Word/Excel/PowerPoint apps. It bundles Writer, Calc, Impress, Draw, Base, and Math, runs on Windows, macOS, and Linux, and opens and saves Microsoft's DOCX, XLSX, and PPTX files as well as the open OpenDocument (ODF) formats. It is produced by the non-profit Document Foundation, installs locally with no account or cloud, and costs nothing. It is the right pick for individuals and organizations that mainly need capable offline documents and full control over their files. Its main gap versus 365 is native real-time co-authoring in the desktop apps; browser-based simultaneous editing comes from the related Collabora Online project, listed below.
Collabora Online
Self-hosted, browser-based collaborative editing built on the LibreOffice engine.
Collabora Online is a self-hostable, browser-based office suite from Collabora that brings real-time co-authoring to the LibreOffice engine, so multiple people can edit the same Writer, Calc, or Impress document at once through a web browser. The free Collabora Online Development Edition (CODE) is a rolling release aimed at home use, testing, and small teams, while the supported Collabora Online product targets organizations that need stability and vendor support. It is the natural way to add Google-Docs-style collaboration on your own server, and it is what powers Nextcloud Office (the richdocuments app) inside a Nextcloud instance. It is MPL-2.0 licensed.
Side by side
10 points of comparison, every one read from a verified field. Green marks the side that wins a row outright. A dash means we do not hold that fact — never that it is zero.
| LibreOffice | Collabora Online | |
|---|---|---|
| Sovereignty ScoreOur transparent 0–100 composite for data ownership and exit cost. | 100 | 95 |
| Open source | Yes | Yes |
| Self-hostable | Yes | Yes |
| Local-first data | Yes | Yes |
| License | MPL-2.0 | MPL-2.0 |
| Pricing | Free / runs locally | Free self-hosted CODE edition; paid supported edition and hosting available |
| RAM to run it wellThe figure that actually matters, not the vendor's minimum. | 2 GB with a large spreadsheet open | 4 GB, and roughly 1 GB per 20 concurrent documents |
| Realistic running costWhat the box costs each month if you run it yourself. | $0 — it runs on the machine you already own | $20–35/mo on a VPS alongside Nextcloud |
| Setup timeHonest first-install estimate, not the marketing quickstart. | 15 minutes | 2 hours, most of it on the reverse proxy |
| Ongoing maintenanceThe part nobody budgets for. | Low. Update on the Still branch unless you need new features. | Moderate. The proxy configuration is the fragile part. |
LibreOffice is Macrostack's recommended Microsoft 365 alternative, so it's our pick here.
Weighing both against staying on Microsoft 365? Is Microsoft 365 free? What it actually costs →
LibreOffice
Strengths
- +Fully open-source under MPL-2.0, an OSI-approved license
- +Runs entirely offline on your own computer with no account, subscription, or cloud
- +The most feature-complete free desktop suite: word processor, spreadsheet, presentations, plus Draw, Base, and Math
- +Reads and writes Microsoft's DOCX/XLSX/PPTX as well as the open ODF formats, so files stay portable
- +Backed by the non-profit Document Foundation with a very active release cadence and large community
Trade-offs
- −No built-in real-time co-authoring in the desktop apps; browser-based simultaneous editing needs the related Collabora Online
- −Complex Microsoft documents (heavy macros, advanced pivot tables, intricate formatting) can shift slightly on import/export
- −No bundled cloud storage, email, or team-chat equivalent to OneDrive/Outlook/Teams
- −The interface and defaults differ from Microsoft's, so there is a short adjustment period
Collabora Online
Strengths
- +Fully open-source under MPL-2.0, an OSI-approved license
- +Real-time, in-browser co-authoring of documents, spreadsheets, and presentations on a server you control
- +Built on the mature LibreOffice engine, so format handling matches LibreOffice closely
- +Powers Nextcloud Office, giving an easy path for people already running Nextcloud
- +Supports ODF and Microsoft formats, keeping documents portable
Trade-offs
- −Requires running a server; setup and maintenance are more involved than a desktop install
- −The free CODE edition is a rolling release the vendor does not recommend for production; production use points to the paid supported edition
- −Best used alongside a file backend such as Nextcloud, rather than as a standalone suite
- −Browser-based editing depends on the server being available, so it is less 'offline-first' than a desktop app
Which one fits you
The trade-offs above, turned into a decision. Find the line that describes your team.
Choose LibreOffice
if a lower exit cost matters more to you than any single feature, and fully open-source under MPL-2.0, an OSI-approved license.
Choose Collabora Online
if fully open-source under MPL-2.0, an OSI-approved license.
Neither, yet
if both carry a real cost you should weigh first — no built-in real-time co-authoring in the desktop apps; browser-based simultaneous editing needs the related Collabora Online, and requires running a server; setup and maintenance are more involved than a desktop install. If either of those is a dealbreaker for your team, the shortlist is wrong rather than the choice.
What it takes to run these yourself
Real requirements and honest running costs, not the vendor quickstart.
LibreOffice vs Collabora Online — common questions
Is LibreOffice a better fit than Collabora Online for office & productivity suites?
It depends on what you are optimising for, and the honest split is this: LibreOffice scores 100 to Collabora Online's 95 on data ownership and exit cost, so it is the safer choice if you care about being able to leave. Collabora Online earns its place on a different axis — fully open-source under MPL-2.0, an OSI-approved license. Neither is a wrong answer for every team; the table above is the actual comparison.
What happens if we want to switch later?
LibreOffice keeps its data local or in open formats, so leaving is an export rather than a negotiation. Collabora Online is still self-hostable, so the files stay on your server either way — but it is not local-first by design, so check what its export produces before you rely on it.
Can I self-host LibreOffice or Collabora Online?
Both can be self-hosted. The difference is what it costs you in time rather than whether it is possible — see the setup and maintenance rows above.
Are LibreOffice and Collabora Online both alternatives to Microsoft 365?
Yes — both appear in our Microsoft 365 comparison, which is why they are worth putting side by side. People usually arrive here already having decided to move off Microsoft 365 and now choosing between the two replacements, which is a narrower and much easier question.
More Microsoft 365 head-to-heads
Related alternative guides
Facts verified 2026-07-06. Licenses and pricing change — spotted something out of date? That's a correction we want.