Microsoft's web-based Office. Direct CLOUD Act exposure.
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Ordered by feature parity and migration friction, which is weighted higher than feature breadth.
Figure 1Closest matches to Microsoft Office Online
Cambridge-based LibreOffice Online (MPL-2.0/LGPL) by Collabora Productivity Ltd: free CODE dev edition + €3/user/mo Business; self-hostable on EU infra.
Riga-based Latvian office suite (Ascensio System SIA), AGPLv3 self-hostable + DocSpace cloud; complex post-2023 Singapore+UK+Russian-origin ownership chain.
Paris-based E2E-encrypted open-source collaboration suite (CryptPad by XWiki SAS), NLnet/NGI-EU-funded; zero-knowledge architecture.
All 3 alternatives, benchmarked against Microsoft Office Online.
Cambridge-based LibreOffice Online (MPL-2.0/LGPL) by Collabora Productivity Ltd: free CODE dev edition + €3/user/mo Business; self-hostable on EU infra.
Riga-based Latvian office suite (Ascensio System SIA), AGPLv3 self-hostable + DocSpace cloud; complex post-2023 Singapore+UK+Russian-origin ownership chain.
Paris-based E2E-encrypted open-source collaboration suite (CryptPad by XWiki SAS), NLnet/NGI-EU-funded; zero-knowledge architecture.
Beyond compliance: how these alternatives compare on the capabilities you actually use day to day.
| Feature | Collabora Online | OnlyOffice | CryptPad |
|---|---|---|---|
| Self-hostable | Yes | Yes | Yes |
| Real-time collaboration | Yes | Yes | Yes |
| Databases / tables | No | No | Yes |
| Public publishing | Not assessed | Yes | Not assessed |
| Version history | Yes | Yes | Yes |
| Granular permissions | Not assessed | Yes | Yes |
| Offline mode | Yes | Yes | No |
| AI assist | Yes | Yes | Not assessed |
Source: vendor documentation, as of Aug 2026.
Listed for transparency. Every product on this page is benchmarked against this baseline.
Listed for transparency. Every product on this page is benchmarked against this baseline.
Microsoft's web-based Office. Direct CLOUD Act exposure.
For every product we read the public DPA, sub-processors document, hosting region declaration, and corporate ownership records. Each is timestamped. Signals are editorial, re-verified quarterly. We never accept self-attestation.
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