this post was submitted on 03 Jul 2026
38 points (97.5% liked)
Opensource
6387 readers
273 users here now
A community for discussion about open source software! Ask questions, share knowledge, share news, or post interesting stuff related to it!
⠀
founded 2 years ago
MODERATORS
you are viewing a single comment's thread
view the rest of the comments
view the rest of the comments
Technically Office Open XML is not proprietary, since they published and standardized it under ISO/IEC 29500. Practically no software suite besides MS Office is able to render it 100% compatible to each other. But to be fair, neither did OpenDocument; a document in LibreOffice odt looks slightly different in OnlyOffice, WPS, SoftMaker, etc.
Huh you're right, seems they even publish specs of their own extensions to the format.
They still restrict what you can do with it and how you can share it though, so technically still proprietary.