LanguageTool records 5,707,795 monthly visits with -4.2% month-over-month growth and Freemium pricing. VisibleThread records 14,783 monthly visits with +3.3% growth and Contact for Pricing pricing.
AI grammar, spelling and style checker for 30+ languages
Full-lifecycle RFP intelligence with deterministic accuracy and grounded AI
| Dimension / Metric | | |
|---|---|---|
| Official Domain | languagetool.org | visiblethread.com |
| Pricing Model | Freemium | Contact for Pricing |
| Monthly Visits | 5.71M (5,707,795) | 14.78K (14,783) |
| MoM Traffic Delta | -247.26K (-4.2%) | +469 (+3.3%) |
| Primary Market & Share | 🇧🇷 Brazil (13.8%) | 🇺🇸 United States (38.5%) |
| Direct Visits / mo | 3.23M | 5.93K |
| User Rating | 4.3 | 4.4 |
| Supported Platforms | Website | Website |
AI grammar, spelling and style checker for 30+ languages
Detects grammatical errors, typos, punctuation issues and casing mistakes across 30+ languages.
Rephrase any sentence to be more formal, fluent, simple or concise with AI-driven suggestions.
Browser add-ons plus Google Docs, Word, LibreOffice, Gmail and Outlook integrations, and desktop apps.
Advanced suggestions flag overused phrases, redundancy and wording that weakens your text.
Full-lifecycle RFP intelligence with deterministic accuracy and grounded AI
Pull opportunities from SAM.gov, eBuy, Find a Tender, and other sources, then score contract fit and run AI win-theme and past-performance analysis.
A rules-based engine shreds requirements, builds compliance matrices, flags liability and risk language through dictionaries and watchwords, and compares versions with 100% repeatable, audit-ready results.
A Prompt Library and approved Collections give teams a running start on competitive intel, win themes, and past performance, with every answer grounded in approved content and cited to source.
Customizable Kanban stages, tasks, reviewers, and comments keep proposal work moving from initiation through red team to submission on one source of truth.
SpecialistEnterprise-grade neural machine translation, AI writing refinement, and real-time voice translation across thirty-plus global languages.
SpecialistEnterprise-grade neural machine translation, AI writing refinement, and real-time voice translation across thirty-plus global languages.
A premier cross-platform writing assistant offering robust real-time grammar checks, tone alignment, and style suggestions.
A premier cross-platform writing assistant offering robust real-time grammar checks, tone alignment, and style suggestions.
SpecialistAn AI writing assistant specializing in advanced paraphrasing and text rewriting alongside built-in grammar checks.
SpecialistAn AI writing assistant specializing in advanced paraphrasing and text rewriting alongside built-in grammar checks.
SpecialistAcademic proofreading, plagiarism checking and AI-powered writing tools in one place
SpecialistAcademic proofreading, plagiarism checking and AI-powered writing tools in one place
A comprehensive writing enhancement platform combining deep style analysis with line-level grammar and spelling correction.
A comprehensive writing enhancement platform combining deep style analysis with line-level grammar and spelling correction.
SpecialistAI translation for text, images, documents and speech in 100+ languages
SpecialistAI translation for text, images, documents and speech in 100+ languages
SpecialistAI academic writing assistant that edits, cites, and checks your manuscript right where you write
SpecialistAI academic writing assistant that edits, cites, and checks your manuscript right where you write
SpecialistA web-based writing tool that highlights readability issues, complex sentences, and style flaws in draft text.
SpecialistA web-based writing tool that highlights readability issues, complex sentences, and style flaws in draft text.
An AI writing assistant focusing on sentence paraphrasing, tone adjustment, and grammar correction for everyday communication.
An AI writing assistant focusing on sentence paraphrasing, tone adjustment, and grammar correction for everyday communication.
SpecialistA privacy-first writing and grammar assistant tailored specifically for academic and technical document proofreading.
SpecialistA privacy-first writing and grammar assistant tailored specifically for academic and technical document proofreading.
A streamlined AI writing assistant and grammar checker correcting spelling, punctuation, and style across browsers.
A streamlined AI writing assistant and grammar checker correcting spelling, punctuation, and style across browsers.
SpecialistAgentic contract lifecycle management that turns agreements into business results
SpecialistAgentic contract lifecycle management that turns agreements into business results
