Grammarly records 58,867,412 monthly visits with -1.5% month-over-month growth and Freemium pricing. Roundtable (Proof of Human) records 854 monthly visits with -60.5% growth and Contact for Pricing pricing.
Cross-platform AI writing assistant delivering real-time grammar correction, tone alignment, authorship tracking, and team style guides.
Ubiquitous Inline Rewriting & Tone Calibration
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.
Specialized AI Agents (AI Grader, Citation Finder & Reader Reactions)
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.
Grammarly Authorship, AI Detector & Plagiarism Checker
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.
Team Style Guides, Brand Tones & Knowledge Share
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.
Strengths & Pros
+Frictionless cross-platform integration works inside virtually every browser, desktop app, email client, and mobile OS without copy-pasting into a separate chatbot.
Frequently Asked Questions: Grammarly vs Roundtable (Proof of Human)
Grammarly has 58,867,412 monthly visits, while Roundtable (Proof of Human) has 854. Traffic estimates describe audience size, not product quality.
Best Alternatives to Grammarly & Roundtable (Proof of Human) (12)
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Consolidating Premium and Business into Grammarly Pro ($12/member/month annual) gives individuals and small teams access to style guides, analytics, and plagiarism/AI detection in one plan.
+Grammarly Authorship provides a constructive, transparent audit trail for students and writers to demonstrate human writing integrity alongside responsible AI editing.
+Mature enterprise security posture featuring BYOK encryption, Data Loss Prevention, and granular application/domain blocklists.
Limitations
–Month-to-month billing on Grammarly Pro is steep at $30/member/month compared to the $12/member/month annual commitment ($144 billed upfront).
–Core writing intelligence and style rules remain primarily optimized for English dialects (US, UK, Canadian, Australian, Indian) rather than native multilingual grammar checking.
–Aggressive inline underlines and pop-up agent cards can feel visually intrusive in dense technical documents or code-heavy web editors unless muted per domain.
Roundtable (Proof of Human)
Prove every user is real — invisibly and continuously.
Invisible, Frictionless Verification
Proof of Human runs silently behind login and checkout flows, scoring behavior in under 200 milliseconds without CAPTCHAs or friction for real people.
Continuous Behavioral AI
Continuous behavioral models look for programmatic typing, teleporting mouse movement, jump scrolling, centered clicks and pasted text to catch bots and AI agents mid-session.
Privacy-Preserving by Design
The service states it collects no PII and does no cross-site tracking, helping teams meet compliance and privacy requirements.
Effortless Integration
A single script tag with a site key and user ID is enough to begin verifying sessions, and results include an example session report with explainable signals.
Strengths & Pros
+No CAPTCHAs, popups or friction for genuine users
+Continuous behavioral scoring rather than a one-time human check
+Detects modern AI agents as well as classic bots
+Privacy-preserving: no PII and no cross-site tracking
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Fast integration via a single script tag with sub-200ms scoring
Limitations
–Pricing is quote-based, so buyers cannot self-serve or compare costs upfront
–Enterprise buyers must go through a demo and sales process
–Continuous behavioral verification can raise privacy review questions before deployment
–Previewed prices and plans are not published on the site
