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Strongest Layer
✓ verifiedPaid
AI email security platform that reasons about intent and harm to catch novel phishing and BEC attacks that bypass signature-based gateways.
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ZeroGPT
✓ verifiedFreemium
All-in-one AI writing suite led by an AI content/GPT detector, bundling a humanizer, paraphraser, grammar checker, translator, and chatbot.
26M visits/mo3.4K saves
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GPTZero
✓ verifiedFreemium
AI-content detector aimed at educators, adding plagiarism, grammar and citation checks with claimed high accuracy.
17M visits/mo7.3K saves
Pricing
No public pricing
Free: $0 forever
No public pricing
Core features
- ✦AI email threat detection analyzing intent, harm, and anomaly signals
- ✦In-inbox Trust Score and plain-language risk explanations for employees
- ✦AI-triaged alerts with MITRE ATT&CK mapping for analysts
- ✦Deploys without MX record changes in about 15 minutes
- ✦Catches AI-generated BEC that passes SPF, DKIM, and DMARC checks
- ✦One-click actions to release, quarantine, or sweep similar threats
- ✦Multi-model AI text detector (ChatGPT, GPT-5, Gemini, Claude, DeepSeek, etc.)
- ✦AI text humanizer to reduce detectability
- ✦Plagiarism checker across billions of sources
- ✦AI paraphraser, summarizer, and grammar checker
- ✦AI translator and word counter utilities
- ✦ZeroCHAT general-purpose AI chatbot
- ✦WhatsApp and Telegram bot access
- ✦Downloadable PDF detection reports and batch file upload
- ✦Detects AI text from major LLMs (ChatGPT, Claude, Gemini, Llama)
- ✦Sentence-level highlighting with explanations
- ✦Plagiarism and grammar checking
- ✦Hallucination and citation verification
- ✦Authorship/writing-process verification
- ✦Integrations for Chrome, Google Docs, Canvas and API
Use cases
- →Security teams stopping zero-day phishing that evades signature-based tools
- →Law firms and manufacturers protecting against targeted email fraud
- →Analysts triaging email alerts faster with pre-investigated findings
- →Coaching employees in real time on suspicious email risk
- →Educators checking student submissions for AI-generated content
- →Writers verifying and humanizing AI-assisted drafts
- →Checking text for plagiarism before publishing
- →Businesses integrating AI detection via API
- →Quick grammar/translation checks while writing
- →Checking student work for AI-generated content
- →Verifying authentic authorship in classrooms
- →Screening submissions for publishers and recruiters
- →Detecting AI text through the API in other apps
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