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LanguageTool

Self-hostable grammar & style checker (Grammarly alternative)

provisional — pending verificationLGPL-2.1 (core)self-hostable
Arete score
4.0 / 5
Autonomy5
Return4
Efficiency3
Transparency4
ἀρετή “AH-reh-tay” — excellence: a thing being good at what it’s for. Mean of the four principle scores. How we score →
Visit site ↗ Self-host with ValueIndex — join waitlist

Plain outbound link — no affiliate parameters, no tracking redirects.

~ Provisional — seeded estimate by a human researcher; full rubric pass pending. Working notes ↓

Why it's listed

LanguageTool is listed in writing & grammar tools because it competes on utility: self-hostable grammar & style checker (grammarly alternative). Its funding model is disclosed on the listing. Licensed LGPL-2.1 (core); pricing: free (ce) / paid premium. Its resource footprint is reasonable for what it does, though not featherweight. This entry is provisional — the scores are seeded estimates pending our full manual rubric pass, and the verification date will appear here once complete.

Facts

License
LGPL-2.1 (core)
Pricing
Free (CE) / paid premium
Funding model
Commercial OSS
Self-hostable
Yes — deploy difficulty: medium
Replaces
Grammarly
Verification
Provisional — scores are seeded estimates pending manual verification

Evidence notes

Java; premium rules proprietary

Recorded during the rubric pass — every score must carry evidence a stranger could re-check.

Also in writing & grammar tools

Spotted a problem — trackers added, dark patterns, abandonment? Report a violation. Scores change when evidence does.