Rating
3.6
166 · App Store
Trust
7/9
of nine checks verified · Jul 17, 2026
Platforms
3
Windows, macOS, Linux
Licence
AGPL-3.0
Productivity
Independently checked by Altapp where possible; developer-reported data is labeled as such. Last full review: Jul 17, 2026.
Builds come directly from the developer with published integrity data.
The desktop suite edits documents fully offline; the Android app contains tracker SDKs.
The desktop app had a 2026 Windows attack chain, fixed in 9.3.0; server components have a longer CVE list.
Verification reflects the version listed above. Practices may change between releases. How we verify ›
Our verdict: a genuinely free, open-source Microsoft Office alternative with excellent OOXML fidelity — stay on 9.3.0 or later, verify downloads against the GitHub digests, and note the mobile app's tracker findings.
ONLYOFFICE Desktop Editors is a free, open-source office suite from Latvia-based Ascensio System SIA that bundles word processing, spreadsheets, presentations, and a capable PDF editor into a single application for Windows, macOS, and Linux. Its standout strength is fidelity to Microsoft's OOXML formats: DOCX, XLSX, and PPTX files open and save with formatting intact, making it one of the smoothest transitions away from Microsoft Office. Companion mobile apps for iOS and Android and web-based editors extend the suite beyond the desktop.
The entire codebase is published on GitHub under the AGPL-3.0 license, and GitHub shows a SHA-256 digest for every release asset so downloads can be verified against tampering. The desktop suite works fully offline; connecting it to a cloud — ONLYOFFICE DocSpace, Nextcloud, or another document server — is strictly optional. Version 9.3.0 (February 2026) closed a Windows attack chain later published as OnlyShells, and 10.0.0 (October 2026) added 33 more security fixes and moved AI into an optional plugin.
Free open-source office suite
Choose LibreOffice if
You want a fully community-governed office suite with the longest open-source track record
Self-hosted file sync and collaboration
Choose Nextcloud if
You want self-hosted file sync and collaboration built around your documents
All-in-one connected workspace
Choose Notion if
You want a connected cloud workspace for notes and docs rather than a classic office suite
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Yes — the pricing listed at our last review is “Free”.
Altapp's independent Trust Report (last full review Jul 17, 2026) records 7/9 of nine checks verified, covering source verification, data & permissions, and known risks. Altapp publishes no score or grade of its own — the count is a tally of what could be independently confirmed, and verification reflects the version listed on this page.
Windows 7+ · macOS 10.10+ · Linux.
LibreOffice, Nextcloud, Notion — each with its own verified Trust Report on Altapp. See the full list ›
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