Free / Open-sourceAI content detection and a full writing toolkit in one place
Free / Open-sourceAI content detection and a full writing toolkit in one place
Originality.ai records 2,049,639 monthly visits with +2.8% month-over-month growth and Paid pricing. Secur3D records 135 monthly visits with -80.5% growth and Contact for Pricing pricing.

Detect unauthorized brand, IP and UGC content before it damages revenue
| Dimension / Metric | ![]() | ![]() |
|---|---|---|
| Official Domain | originality.ai | secur3d.ai |
| Pricing Model | Paid | Contact for Pricing |
| Monthly Visits | 2.05M (2,049,639) | 135 (135) |
| MoM Traffic Delta | +55.72K (+2.8%) | -556 (-80.5%) |
| Primary Market & Share | 🇺🇸 United States (38.4%) | 🇨🇦 Canada (100%) |
| Direct Visits / mo | 890.71K | 56 |
| User Rating | 4 | 4 |
| Supported Platforms | Website | Website |

AI detector, plagiarism and content-quality checks in one scan
Classifies text as AI, original or mixed and pinpoints which sentences most influenced the score, so reviewers know exactly where to look.
Runs plagiarism matching, readability scoring, grammar and spelling fixes, guideline checks and fact/hallucination screening from the same scan.
Upload DOCX, PDF or DOC files, paste text, scan a URL, or queue large batches of documents to process at scale.
Check content inside Chrome and Google Docs, or wire detection into your own apps through the REST API and MCP server.

Detect unauthorized brand, IP and UGC content before it damages revenue
Analyzes uploads and published content to flag brand, intellectual property and digital asset risk, targeting the flood of AI-generated and AI-modified material that manual review cannot keep up with.
For marketplaces and platforms, evaluates content as it is uploaded so risky items can be caught before they go live rather than removed after complaints.
Helps studios and developers locate unauthorized copies, lookalikes and derivative works of their IP across marketplaces and UGC platforms.
Verifies signals around ownership and authenticity so brands and creators can substantiate claims about their original designs and digital assets.
Free / Open-sourceAI content detection and a full writing toolkit in one place
Free / Open-sourceAI content detection and a full writing toolkit in one place
Free / Open-sourceAI detection and writing verification built for schools and editors
Free / Open-sourceAI detection and writing verification built for schools and editors

SpecialistAcademic proofreading, plagiarism checking and AI-powered writing tools in one place
SpecialistAcademic proofreading, plagiarism checking and AI-powered writing tools in one place
Free / Open-sourceDetect, humanize and verify AI content in one place
Free / Open-sourceDetect, humanize and verify AI content in one place

Enterprise AI and plagiarism detection for content integrity
SpecialistHumanize AI text and check it against major AI detectors
SpecialistHumanize AI text and check it against major AI detectors

Free / Open-sourceMultilingual AI detector with sentence-level insight
Free / Open-sourceMultilingual AI detector with sentence-level insight
SpecialistHumanize AI text and detect it — one clean, all-in-one writing suite
SpecialistHumanize AI text and detect it — one clean, all-in-one writing suite

Free / Open-sourceDetect AI-generated text and images with benchmark-tested accuracy
Free / Open-sourceDetect AI-generated text and images with benchmark-tested accuracy
Free / Open-sourceAI detector that highlights evidence, not just a score
Free / Open-sourceAI detector that highlights evidence, not just a score

Free / Open-sourceAccuracy-first plagiarism and AI detection for schools, universities, and teams
Free / Open-sourceAccuracy-first plagiarism and AI detection for schools, universities, and teams

SpecialistCombines classic plagiarism detection with grammar checking, but lacks the specialized deep-learning AI author detection models found in Originality.
SpecialistCombines classic plagiarism detection with grammar checking, but lacks the specialized deep-learning AI author detection models found in Originality.