University and Careers
Open Courses
- MIT OpenCourseWare - MIT course materials, lectures, and assignments.
- edX - University and professional online courses.
- Coursera - University courses, certificates, and guided projects.
- OpenLearn - Free courses from The Open University.
- Saylor Academy - Self-paced open courses with certificates.
- Class Central - Search engine and review site for online courses.
- Alison - Free online courses and workplace skill programs.
- OpenHPI - Computer science and digital skills courses.
- Carnegie Mellon Open Learning Initiative - Evidence-based self-paced learning modules.
- NPTEL - Indian university lecture courses.
- Yale Open Courses - Free Yale course lectures and materials.
- Gresham College - Public lecture archive.
- VideoLectures - Academic lecture recordings.
Research
- Google Scholar - Scholarly search and citation tracking.
- Semantic Scholar - AI-assisted paper discovery.
- Zotero - Citation manager and research library.
- Purdue OWL - Academic writing and citation guides.
- arXiv - Preprint repository for STEM research.
- CORE - Open access research paper aggregator.
- DOAJ - Directory of open access journals.
- Unpaywall - Tool for locating open versions of papers.
Learning Roadmaps
- Open Source Society University - Open curriculum for computer science and related study.
- OSSU Math - Self-study roadmap for undergraduate math.
- Math and Science Video Lectures - Curated science and math lecture list.
- Free Programming Books Courses - Programming and computer science course directory.
- Roadmap.sh - Skill roadmaps for developer and technical careers.
Course Directories
- Free Courses for Everyone - Community index of open course sources.
- Course CSE - Multi-site course search.
- EbookFoundation Courses - Programming and computer science course directory.
- Open Culture Courses - Curated open courses and lecture collections.
Career
- Roadmap.sh - Practical career and skill roadmaps.
- Kaggle Learn - Short data science and machine learning courses.
- freeCodeCamp - Programming curriculum and projects.
- Google Digital Garage - Digital marketing and career skill courses.
- Google Learn About - AI-assisted learning explainer tool.
- Sanfoundry - Technical Q&A and interview practice.