✓
Tool
Category
Pricing
Free?
Updated
PubMed AI ✓
AI Research
Free
✓
Mar 2026
→
AI-enhanced biomedical literature search built on the PubMed database by NCBI.
Best for: biomedical
OpenAlex
AI Research
Free
✓
Mar 2026
→
Free open catalog of 250M+ scholarly works with open API and data snapshots.
Best for: research
CORE
AI Research
Free
✓
Mar 2026
→
World's largest open access paper aggregator with 250M+ records and text mining API.
Best for: open-access
Zotero ✓
AI Research
Free
✓
Mar 2026
→
Free open-source reference manager with browser extension, annotations, and Word integration.
Best for: reference-manager
Unpaywall
AI Research
Free
✓
Mar 2026
→
Free browser extension that finds legal open access versions of paywalled papers.
Best for: open-access
Shap-E
AI 3D Generation
Free
✓
Mar 2026
→
OpenAI open-source model for generating 3D objects from text and images
Best for: 3d-generation
DSPy
AI Agents
Free
✓
Mar 2026
→
Stanford framework for algorithmically optimizing LLM prompts and agent pipelines
Best for: DSPy
ResearchRabbit ✓
AI Research
Free
✓
Mar 2026
→
Free personalized research paper discovery with visual networks and new paper alerts.
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
Google Scholar ✓
AI Research
Free
✓
Mar 2026
→
Free Google search engine for scholarly articles, theses, books, and patents worldwide.
Best for: research
Inciteful
AI Research
Free
✓
Mar 2026
→
Free citation network analysis tool for rapid literature review and paper discovery.
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
Kopernio
AI Research
Free
✓
Mar 2026
→
Clarivate browser extension for one-click PDF access to research papers via library links.
Best for: browser-extension
SWE-agent
AI Agents
Free
✓
Mar 2026
→
Research AI agent from Princeton that resolves GitHub issues by writing and testing code
Best for: software-engineering
SWE-bench
AI Coding
Free
✓
Mar 2026
→
Benchmark framework evaluating AI coding agents on real GitHub issues and PRs.
Best for: ai-platform
Logseq
AI Productivity
Free
✓
Mar 2026
→
Open-source local-first knowledge management with AI and bidirectional links
Best for: note-taking