✓
Tool
Category
Pricing
Free?
Updated
Google Scholar ✓
AI Research
Free
✓
Mar 2026
→
Free Google search engine for scholarly articles, theses, books, and patents worldwide.
Best for: research
BASE Search
AI Research
Free
✓
Mar 2026
→
Academic search engine indexing 300M+ open access documents from 10,000+ providers.
Best for: research
Semantic Scholar ✓
AI Research
Free
✓
Mar 2026
→
Free AI academic search with 200M+ papers, TLDR summaries, and citation graphs.
Best for: research
OpenAlex
AI Research
Free
✓
Mar 2026
→
Free open catalog of 250M+ scholarly works with open API and data snapshots.
Best for: research
Inciteful
AI Research
Free
✓
Mar 2026
→
Free citation network analysis tool for rapid literature review and paper discovery.
Best for: research