
SpecialistOutstanding for context-aware translation and professional writing refinement, but not designed as a dedicated grammar checker.

clickworker records 1,861,149 monthly visits with +0.5% month-over-month growth and Contact for Pricing pricing. Grammarly records 58,867,412 monthly visits with -1.5% growth and Freemium pricing.

Crowdsourcing data services for AI training and market data
| Dimension / Metric | ![]() | ![]() |
|---|---|---|
| Official Domain | clickworker.com | grammarly.com |
| Pricing Model | Contact for Pricing | Freemium |
| Monthly Visits | 1.86M (1,861,149) | 58.87M (58,867,412) |
| MoM Traffic Delta |
|---|
| +9.57K (+0.5%) |
| -916.08K (-1.5%) |
| Primary Market & Share | 🇺🇸 United States (27.6%) | 🇺🇸 United States (51.9%) |
|---|
| Direct Visits / mo | 947.13K | 25.4M |
|---|
| User Rating | 3.9 | 4.4 |
|---|
| Supported Platforms | Website | Website |
|---|

Crowdsourcing data services for AI training and market data
Custom image, video, audio and text datasets with human labeling, annotation and validation, delivered with parent company LXT.
Registered freelancers in 136 countries fill microtasks through web, Android and iOS apps, with flexible scaling up or down.
An all-in-one survey tool plus access to a verified respondent pool for external studies and targeted insights.
Real-time point-of-sale data collection, display audits, mystery checks, and usability testing for websites, apps and games.

Cross-platform AI writing assistant delivering real-time grammar correction, tone alignment, authorship tracking, and team style guides.
Works natively inside Chrome, Safari, Firefox, Edge, Windows, Mac, Google Docs, MS Office, and mobile keyboards to flag grammar mistakes, rewrite tangled sentences, and shift tone toward confident, empathetic, or executive registers.
Deploys contextual AI agents that predict how a target audience will react to a draft, locate credible supporting citations, grade essays against rubric criteria, and generate drafts using up to 2,000 monthly prompts on Pro.
Scans text against billions of web pages and academic databases for accidental plagiarism, detects AI-generated passages, and logs transparent document provenance via Authorship reports in Google Docs and Word.
Enables teams on Pro and Enterprise plans to codify company terminology, ban deprecated jargon, enforce inclusive language, insert shared Snippets, and surface internal company definitions inline.

SpecialistOutstanding for context-aware translation and professional writing refinement, but not designed as a dedicated grammar checker.

Excels at heavy paraphrasing and text rewriting, but offers less seamless inline real-time proofreading across all apps.
Offers a high-quality pool of verified human participants for research and preference tuning, but is less focused on traditional data annotation.

Connects subject matter experts for advanced LLM training and prompting, but lacks general microtask crowdsourcing capabilities.

Provides strong multilingual grammar and style checking across apps, but offers fewer advanced generative AI features.

Delivers deeper manuscript analysis and structural reports, but has a steeper learning curve than Grammarly.

Specializes in matching AI labs with vetted human experts for RLHF, but offers fewer general data annotation services.
SpecialistAI academic writing assistant that edits, cites, and checks your manuscript right where you write

Provides enterprise-grade data annotation and training datasets at scale, but with a more corporate engagement model.
SpecialistHighlights readability and sentence complexity visually, but lacks automated grammar correction and browser-wide extension support.

Great for sentence-level tone adjustments and rewriting, but less comprehensive for standalone grammar rules and style guides.

AI writing assistant with autocomplete, research, and a Chrome extension
SpecialistOutstanding for context-aware translation and professional writing refinement, but not designed as a dedicated grammar checker.
Excels at heavy paraphrasing and text rewriting, but offers less seamless inline real-time proofreading across all apps.
Offers a high-quality pool of verified human participants for research and preference tuning, but is less focused on traditional data annotation.
Connects subject matter experts for advanced LLM training and prompting, but lacks general microtask crowdsourcing capabilities.
Provides strong multilingual grammar and style checking across apps, but offers fewer advanced generative AI features.
Delivers deeper manuscript analysis and structural reports, but has a steeper learning curve than Grammarly.
Specializes in matching AI labs with vetted human experts for RLHF, but offers fewer general data annotation services.
SpecialistAI academic writing assistant that edits, cites, and checks your manuscript right where you write
SpecialistHighlights readability and sentence complexity visually, but lacks automated grammar correction and browser-wide extension support.
Great for sentence-level tone adjustments and rewriting, but less comprehensive for standalone grammar rules and style guides.
AI writing assistant with autocomplete, research, and a Chrome extension