LanguageTool
AIOpen-source-core grammar and spell checker supporting 31 languages, with the strongest multilingual coverage of any tool in this category.
Best for: Multilingual authors and anyone writing in languages other than English
Cheaper than 20 of 29 tools · periods vary
Tools at this price point typically fit a Professional Stack ($2,000+ total).
Details
- Tool Type
- Grammar Checker
- Platform
- Web, Mac, Windows, Ios, Chrome Extension
- Collaboration
- No
LanguageTool is the go-to grammar checker for multilingual authors, supporting 31 languages with rules-based grammar plus AI-assisted paraphrasing on Premium. The LGPL open-source core is self-hostable for privacy-conscious authors.
- Best for: Authors writing in German, French, Spanish, Portuguese, or other non-English languages; budget-conscious English authors
- Key features: 31 languages, open-source self-hostable core, free browser extension, MS Word + LibreOffice + Google Docs plugins on Premium, "Picky Mode" for stylistic suggestions, personal dictionary
- Pricing: Free tier (2,000 chars/check, 3 AI rephrases/day); Premium $59.88/yr ($4.99/mo annual) or $19.90/mo; Teams from $9.49/mo; 14-day money-back guarantee
- Limitations: Free tier 2,000-char cap (~350 words) impractical for manuscripts; Premium cap is 150,000 chars (~25,000 words) — still chapter-by-chapter for novels; no fiction-specific reports or genre awareness
- Why authors love it: Lowest annual price among credible paid options at $59.88/yr; only tool with serious multilingual depth; self-hostable for sensitive manuscripts
More Writing Tools
Showing 3 of 30 alternatives
See all 30 toolsGinger Software
Long-running grammar checker and sentence rephraser with a personal dictionary and 60+ language translation, positioned below Grammarly.
Also offers Grammar Checker
- Collaboration:
- false
- Best for:
- Speculative-fiction authors who need a personal dictionary for invented terms and names
Grammarly
The most widely used grammar and spelling checker, with real-time corrections via browser extensions across nearly every writing surface.
Also offers Grammar Checker
- Collaboration:
- false
- Best for:
- General writing and a fast typo-and-mechanics pass after a fiction-aware tool
QuillBot
AI paraphrasing tool with a built-in grammar checker, popular with students and ESL writers as a low-cost grammar option.
Also offers Grammar Checker
- Collaboration:
- false
- Best for:
- Budget-conscious authors who want a free grammar pass plus occasional paraphrasing
Complete Your Toolkit
Other tools authors typically need alongside writing tools.