Study Tools
Flashcards
- Anki - Spaced repetition flashcard app.
- Knowt - Notes, flashcards, and practice quizzes.
- Quizlet - Flashcards and study sets.
- Cram - Flashcards and memorization tools.
Notes
- Obsidian - Local markdown notes and knowledge graphs.
- Notion - Notes, databases, and study planning.
- Google Keep - Quick notes and reminders.
- Zotero - Citation manager and research library.
- Wakelet - Curated collections and learning boards.
Research
- Google Scholar - Academic paper and citation search.
- Semantic Scholar - AI-assisted scholarly search and paper discovery.
- arXiv - Preprints for physics, math, computer science, and related fields.
- CORE - Open access research paper aggregator.
- DOAJ - Directory of open access journals.
- PubMed Central - Free biomedical and life sciences papers.
- Unpaywall - Browser tool for finding open access versions of papers.
- Open SLUM - Research and paper access link hub.
- TIB AV-Portal - Scientific video and lecture archive.
- Biodiversity Heritage Library - Biodiversity books and historical science texts.
- NIST Chemistry WebBook - Chemistry reference data.
- PubChem - Chemical compound and substance database.
Writing
- Purdue OWL - Academic writing, citation, and grammar guides.
- LanguageTool - Grammar and style checker.
- Grammarly - Writing assistant and grammar checker.
- The Punctuation Guide - Punctuation rules and examples.
- 1000-Word Philosophy - Short academic philosophy essays.
Math and Whiteboards
- WolframAlpha - Computational search and symbolic math.
- GeoGebra - Graphing, geometry, and math visualization tools.
- Desmos - Graphing calculator and classroom activities.
- Excalidraw - Sketch-style whiteboard for diagrams and notes.
- Mathcha - Math editor for equations and diagrams.
- Frink - Unit-aware calculator and programming language.
- Rink - Unit conversion and calculation tool.
- OneConverter - Unit conversion reference.
Memory and Practice
- Memory League - Competitive memory training platform.
- Dual N-Back - Working memory training exercise.
- Art of Memory - Memory techniques, guides, and forum.
- BrainScale - Brain training and memory practice.
Data and Visual References
- Our World in Data - Data-driven global issue explainers.
- Information Is Beautiful - Data visualizations and infographic examples.
- Data Commons - Public data graph and statistics explorer.
- World Bank DataBank - World Bank economic and development datasets.
- UN Data - United Nations statistics database.
- The True Size - Map projection size comparison tool.
- Worldometer - Live and reference global statistics.