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
Copyleaks records 2,402,494 monthly visits with -14.1% month-over-month growth and Paid, Contact for Pricing pricing. StrongestLayer records 0 monthly visits with 0% growth and Contact for Pricing pricing.

Agentic AI email security that reasons about intent
| Dimension / Metric | ![]() | ![]() |
|---|---|---|
| Official Domain | copyleaks.com | strongestlayer.ai |
| Pricing Model | Paid, Contact for Pricing | Contact for Pricing |
| Monthly Visits | 2.4M (2,402,494) | 0 (0) |
| MoM Traffic Delta | -394.39K (-14.1%) | 0 (0%) |
| Primary Market & Share | 🇺🇸 United States (53.2%) | 🌐 Global (—) |
| Direct Visits / mo | 758.5K | 0 |
| User Rating | 4.4 | 4.4 |
| Supported Platforms | Website | Website |

Enterprise AI and plagiarism detection for content integrity
Identifies AI-generated text across 30+ languages and leading LLMs, with reported accuracy above 99% on internal English test sets.
Searches 60 trillion websites, 16,000+ open-access journals and internal repositories to catch paraphrasing and hidden copying.
Extends detection to AI-generated video, audio and images so teams can verify content beyond text alone.
A scalable API and workflow integrations automate content analysis inside LMS platforms, publishing tools and enterprise systems.

Agentic AI email security that reasons about intent
A multi-LLM ensemble reads intent, checks each message against your business context and relationships, and returns a clear verdict instead of relying on signatures or anomaly scores.
Get a plain-English verdict on every message, so anyone on the team can understand why an email was allowed or blocked without reading raw headers.
Reported phish arrive as pre-investigated cases complete with the evidence and reasoning trace your SOC needs to close them quickly.
Turn a single suspicious email into an organisation-wide sweep to find related messages that other filters delivered.
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

SpecialistIncludes expert human proofreading alongside plagiarism checks, but lacks native automated AI content detection.
SpecialistIncludes expert human proofreading alongside plagiarism checks, but lacks native automated AI content detection.

The AI productivity suite with agents, email, and docs that work wherever you do
The AI productivity suite with agents, email, and docs that work wherever you do
Free / Open-sourceDetect, humanize and verify AI content in one place
Free / Open-sourceDetect, humanize and verify AI content in one place

Offers robust combined AI detection and plagiarism checking, but lacks Copyleaks' extensive enterprise API ecosystem.
Offers robust combined AI detection and plagiarism checking, but lacks Copyleaks' extensive enterprise API ecosystem.

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

Provides reliable multi-modal content scanning, but offers fewer enterprise-grade integrations than Copyleaks.
Provides reliable multi-modal content scanning, but offers fewer enterprise-grade integrations than Copyleaks.

Free / Open-sourceFree AI detector with sentence-level insight and a humanizer
Free / Open-sourceFree AI detector with sentence-level insight and a humanizer

Accuracy-first plagiarism and AI detection for schools, universities, and teams
Accuracy-first plagiarism and AI detection for schools, universities, and teams

Check plagiarism, detect AI text and polish your writing in one place
Check plagiarism, detect AI text and polish your writing in one place

Free / Open-sourceAntispam service that keeps junk mail, phishing and viruses out of every inbox
Free / Open-sourceAntispam service that keeps junk mail, phishing and viruses out of every inbox