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Desklib
✓ verifiedFreemium
AI study toolkit for students with an AI grader, paraphraser, quiz maker, plagiarism and AI-content detectors and study documents.
13K visits/mo
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AI-Redact
✓ verifiedFreemium
AI PDF redaction tool that auto-detects and permanently removes PII, with a free tier and pay-per-page pricing.
4.8K visits/mo759 saves
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AI Detect
✓ verifiedFreemium
AI-writing detector with a built-in humanizer; scores text for AI probability plus readability and grade level, free tier available.
7.2K visits/mo
Pricing
No public pricing
Free: $0 (up to 4 pages per PDF, watermarked)
Pay-as-you-go: from $0.13/page (as low as $0.08/page at volume)
Free: $0 (5 scans/day)
Beginner: $3.99/week (750 words, 100 scans/day)
Detection Pro: $5.99/week (1,000 words, 150 scans/day)
Detection Ultimate: $7.99/week (1,500 words, 500 scans/day)
Core features
- ✦AI Grader for assignments
- ✦AI Paraphraser and AI Answers
- ✦AI Quiz generator
- ✦Plagiarism checker and AI detector
- ✦AI Code Checker
- ✦Study documents library
- ✦AI detection of PII, PHI and financial data
- ✦Permanent, irreversible redaction
- ✦OCR for scanned PDFs
- ✦Batch and bulk file processing
- ✦API access and custom integrations
- ✦Files never stored after processing
- ✦AI-writing detection with probability score
- ✦Humanizer to rewrite AI text
- ✦Readability and grade-level analysis
- ✦Multi-model detection (ChatGPT, Gemini, Claude, etc.)
- ✦File upload on paid plans
Use cases
- →Improve grades and academic writing
- →Check work for plagiarism or AI content
- →Generate quizzes and study material
- →Grade assignments faster (educators)
- →Legal discovery and FOIA redaction
- →HIPAA-compliant healthcare records
- →Government public-records redaction
- →Financial document redaction
- →Checking essays and content for AI writing
- →Humanizing AI-generated drafts
- →Editorial and hiring QA
- →Verifying originality before publishing
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