Coursera
Offers online courses from top universities worldwide
edX
Online learning platform founded by Harvard and MIT
Khan Academy
Free online courses, lessons and practice
MIT OpenCourseWare
Free course materials from MIT
Stanford Online
Free courses from Stanford University
Harvard Online Learning
Free courses from Harvard University
FutureLearn
UK-based online learning platform
Udemy Free Courses
Selection of free courses on Udemy
Alison
Free online courses with certificates
OpenLearn
Free learning from The Open University
Academic Earth
Online courses from top universities
Code Cademy
Free coding classes
Duolingo
Free language learning platform
Memrise
Language learning with native videos
Open Culture
List of free online courses
Udacity
Free tech and programming courses
Class Central
Aggregator of free online courses
Google Digital Garage
Free digital skills training
BBC Bitesize
Free study support for UK students
CK-12
Free STEM education resources
Open Yale Courses
Free access to Yale courses
UC Berkeley Online
Free courses from UC Berkeley
Carnegie Mellon OLI
Open Learning Initiative
Saylor Academy
Free online courses and degrees
Open Stax
Free peer-reviewed textbooks
Project Gutenberg
Free eBooks of public domain works
LibriVox
Free public domain audiobooks
ArXiv
Free scientific research papers
Directory of Open Access Journals
Free scientific journals
ResearchGate
Platform to share scientific research
PLOS ONE
Peer-reviewed open access journals
MIT BLOSSOMS
STEM video lessons for high school
NASA STEM Engagement
NASA's free educational resources
National Geographic Education
Geography and science resources
TED-Ed
Educational TED videos and lessons
Crash Course
YouTube educational channel
Wolfram Demonstrations Project
Interactive STEM demonstrations
Internet Archive
Digital library of free books, movies, etc.
MERLOT
Free online learning materials
OER Commons
Open educational resources
Open Textbook Library
Free peer-reviewed textbooks
GCF Global
Free tech and career tutorials
Scratch
Free programming learning for kids
Brilliant
Interactive STEM learning
DataCamp
Free data science courses
Free Code Camp
Learn to code for free
The Learning Network
NY Times educational resources
Smithsonian Learning Lab
Resources from Smithsonian museums
PBS LearningMedia
Free educational videos and resources
European Schoolnet Academy
Free online courses for teachers
Open Education Europa
European OER portal
UNESCO Open Educational Resources
Global OER platform
Udemy coerces
+700Gb coerces from Udemy premium
GitHub coerces
A curated GitHub repository listing free and high-quality online courses that offer legitimate certificates upon completion.