Academic Resources

Use this page when you want the more academic side of the index: research search, open course material, citation tools, data sources, writing help, and subject references.

Research Search

• Google Scholar - Search academic papers, books, patents, and citations.
• Semantic Scholar - Scholarly search with paper summaries, citation graphs, and related work.
• arXiv - Preprints for physics, math, computer science, statistics, and related fields.
• CORE - Open access research paper aggregator.
• DOAJ - Directory of open access journals.
• PubMed Central - Biomedical and life sciences research articles.
• OpenSyllabus - Search course syllabi and reading lists.

Citation and Writing

• Zotero - Reference manager for sources, notes, and bibliographies.
• Unpaywall - Browser tool for locating open access versions of papers.
• Purdue OWL - Academic writing, grammar, research, and citation guidance.
• The Punctuation Guide - Clear rules and examples for punctuation.
• LanguageTool - Grammar, spelling, and style checker.

Open Courses

• MIT OpenCourseWare - MIT course notes, lectures, assignments, and exams.
• edX - University-backed courses and certificates.
• OpenLearn - Free courses from The Open University.
• Saylor Academy - Self-paced open courses.
• Class Central - Search engine and review site for online courses.
• Yale Open Courses - Yale lecture courses and course materials.
• Gresham College - Public lecture archive.
• NPTEL - University engineering and science lecture courses.

Textbooks and References

• OpenStax - Peer-reviewed open textbooks.
• LibreTexts - Open textbook libraries across academic subjects.
• OpenStax Subjects - Textbooks organized by subject and course level.
• LibreTexts Math - Open math textbooks and topic chapters.
• LibreTexts Chemistry - Open chemistry textbooks and reference material.
• LibreTexts Biology - Open biology textbooks and chapters.
• LibreTexts Physics - Open physics textbooks and modules.

Data and Analysis

• Our World in Data - Data-driven explanations of global issues.
• Data Commons - Public data graph and statistics explorer.
• World Bank DataBank - World Bank economic and development datasets.
• UN Data - United Nations statistics database.
• PubChem - Chemical compound and substance database.
• NIST Chemistry WebBook - Chemistry reference data.