
Delivers broader real-time grammar and tone correction across web apps, but lacks Scribbr's deep academic focus and citation formatting.
#1Roundtable (Proof of Human) records 854 monthly visits with -60.5% month-over-month growth and Contact for Pricing pricing. Scribbr records 7,530,803 monthly visits with +14.6% growth and Freemium pricing.

Prove every user is real — invisibly and continuously.
| Dimension / Metric | ![]() | ![]() |
|---|---|---|
| Official Domain | roundtable.ai | scribbr.com |
| Pricing Model | Contact for Pricing | Freemium |
| Monthly Visits | 854 (854) | 7.53M (7,530,803) |
| MoM Traffic Delta |
|---|
| -1.31K (-60.5%) |
| +957.01K (+14.6%) |
| Primary Market & Share | 🇺🇸 United States (100%) | 🇺🇸 United States (32.1%) |
|---|
| Direct Visits / mo | 336 | 2.47M |
|---|
| User Rating | 3.9 | 4.4 |
|---|
| Supported Platforms | Website | Website |
|---|

Prove every user is real — invisibly and continuously.
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 models look for programmatic typing, teleporting mouse movement, jump scrolling, centered clicks and pasted text to catch bots and AI agents mid-session.
The service states it collects no PII and does no cross-site tracking, helping teams meet compliance and privacy requirements.
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.

Academic proofreading, plagiarism checking and AI-powered writing tools in one place
A vetted academic editor reviews your paper within hours and returns tracked changes, comments and an explanation letter.
Scans your document against a large web and publication database to surface potentially unoriginal passages before submission.
Flags text likely generated by large language models and offers a rewriting mode aimed at making AI-assisted drafts sound more natural.
Creates and verifies references in APA, MLA, Chicago, AMA, IEEE and ACS styles from a URL, DOI or title search.

Delivers broader real-time grammar and tone correction across web apps, but lacks Scribbr's deep academic focus and citation formatting.
#1Provides robust paraphrasing and citation tools, but focuses less on comprehensive academic proofreading and human editing.
SpecialistAI content detection and a full writing toolkit in one place
SpecialistFocuses specifically on AI content detection and writing verification for educators, but lacks academic editing and proofreading workflows.

SpecialistAI grammar, spelling and style checker for 30+ languages

Free / Open-sourcePrivacy-first bot detection and fraud prevention for the web

Targeted research audiences with AI-verified data quality
Free / Open-sourceDetect, humanize and verify AI content in one place

SpecialistProvides enterprise-grade AI detection and plagiarism checking, but does not offer human academic proofreading or citation generation.
Offers specialized academic writing assistance and AI citation generation, but lacks Scribbr's human proofreading and formal editing services.

Free / Open-sourceMultilingual AI detector with sentence-level insight

Free / Open-sourceFree AI detector with sentence-level insight and a humanizer
Delivers broader real-time grammar and tone correction across web apps, but lacks Scribbr's deep academic focus and citation formatting.
Provides robust paraphrasing and citation tools, but focuses less on comprehensive academic proofreading and human editing.
SpecialistAI content detection and a full writing toolkit in one place
SpecialistFocuses specifically on AI content detection and writing verification for educators, but lacks academic editing and proofreading workflows.
SpecialistAI grammar, spelling and style checker for 30+ languages
Free / Open-sourcePrivacy-first bot detection and fraud prevention for the web
Targeted research audiences with AI-verified data quality
Free / Open-sourceDetect, humanize and verify AI content in one place
SpecialistProvides enterprise-grade AI detection and plagiarism checking, but does not offer human academic proofreading or citation generation.
Offers specialized academic writing assistance and AI citation generation, but lacks Scribbr's human proofreading and formal editing services.
Free / Open-sourceMultilingual AI detector with sentence-level insight
Free / Open-sourceFree AI detector with sentence-level insight and a humanizer