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Choosing Office Documents alternatives: 6 free/open-source options

Documents, spreadsheets & presentations. Below, 6 tools cover 4 vendors; 3 have been hands-on tested by us, the rest are marked "not tested yet" — no invented verdicts.

Compare at a glance

Tool	Replaces	License	Runs on	Chinese UI	Online
DeckCraft	Microsoft PowerPoint	Apache-2.0 (commercial use OK)	online / desktop	no (English UI)	online, ready to use
GridCraft	Microsoft Excel	Apache-2.0 (commercial use OK)	online / desktop	no (English UI)	online, ready to use
WordCraft	Microsoft Word	Apache-2.0 (commercial use OK)	online / desktop	yes	online, ready to use
LibreOffice not tested yet	Microsoft Word / Microsoft Excel / Microsoft PowerPoint	MPL-2.0 (commercial use OK)	desktop	yes	desktop only
ONLYOFFICE not tested yet	Microsoft Office	AGPL-3.0 (commercial OK, network services must stay open source)	online / desktop	yes	official online
WPS Office not tested yet	Microsoft Office	Proprietary, free with paid tiers	online / desktop / mobile	yes	official online

Pick by need (conclusions first)

Want it now, no install: prioritize the "Online" column; for tools without an online build, use the official online version.
Need a Chinese UI: pick only rows with Chinese UI = yes; an English UI still works, but you will be reading menus by icon.
Commercial use / second-party development: check the license column — MIT / Apache-2.0 are the most permissive; GPL derivatives must stay open source.
Sensitive files: pick self-hosted or desktop tools that process files locally; avoid online services that require uploads.

All 6 tools

DeckCraft

tested

Positioned against PowerPoint. Maturity: in development. The loading-stuck issue in the ol

See hands-on test →

GridCraft

tested

For lightweight spreadsheet needs, the online build is a good starting point; for VBA macr

See hands-on test →

WordCraft

tested

The template-library form is friendly to Chinese users; Chinese shows as tofu blocks in th

See hands-on test →

LibreOffice

not tested yet

Fully free and open source

waiting for hands-on test

ONLYOFFICE

not tested yet

Community edition is open source and self-hostable; the cloud edition is paid per user

waiting for hands-on test

WPS Office

not tested yet

Basic features free; membership / enterprise edition is paid

waiting for hands-on test