✓
Tool
Category
Pricing
Free?
Updated
ChatDoc
AI Research
Freemium
✓
Mar 2026
→
AI file reading assistant with OCR, table understanding, and multi-format support.
Best for: PDF
AskYourPDF
AI Research
Freemium
✓
Mar 2026
→
AI PDF assistant with ChatGPT plugin integration and batch document processing.
Best for: PDF
Humata AI ✓
AI Research
Freemium
✓
Mar 2026
→
AI chat for PDFs that answers questions with page references and summarizes documents.
Best for: PDF
BASE Search
AI Research
Free
✓
Mar 2026
→
Academic search engine indexing 300M+ open access documents from 10,000+ providers.
Best for: research