30 best online educational platforms

Online courses are becoming more and more popular not only among students and pupils, but also among working people. It's an easy way to learn something new for free and from the comfort of your home. We have compiled a list of online educational platforms where you can find not only courses, but also video and audio materials, articles and research.

ALISON offers over 1000 free online courses, after which you can receive certificates. Alison students have access to courses from renowned universities such as Columbia, Cambridge and Yale, and large companies such as Microsoft and Google.

COURSERA is a project founded by Stanford University computer science professors. The project collaborates with universities that publish and conduct courses in various fields of knowledge in the system. Students take courses, communicate with fellow students, take tests and an exam. The platform offers over 2000 courses and 160 specializations from 149 educational institutions.

UDACITY - The site hosts online classes based on projects that focus on programming, data science and mathematics.

MIT Open CourseWare - Free online courses from MIT.

Open Culture - A collection of free educational resources, including courses, tutorials, videos and films.

Open YALE Courses provides free and open access to introductory courses by prominent Yale faculty and scholars. All lectures are recorded in Yale classrooms and are available as video, audio and text transcripts. Registration is not required.

Khan Academy - the site has thousands of lectures on various topics: from history and medicine to chemistry and computer science.

Zooniverse - take part in interesting studies of nature, science and culture.

VideoLectures.NET - many videos for a variety of Topics.

TED - motivational and educational lectures from renowned experts from around the world

Shodor -a non-profit research and educational organization dedicated to promoting science and mathematics education, in particular through the use of modeling technologies. The site has educational resources, software, interactive lessons, research and information on workshops for students, teachers and students of all ages in mathematics and sciencesciences.

Maths & Science - Courses, tests, and study materials in math and science for students in all grades.

edX.org - Free courses designed specifically for interactive learning over the Internet provided by MIT, Harvard, Berkeley and Georgetown Universities, Boston Universities, Washington Universities, Carolina Institutionand many others.

iTunes U is a free Apple app that provides mobile access to courses.It offers many free video courses, books, presentations, and audio lectures.

Liberty Classroom - Free courses in history and economics, but for the price of one movie ticket per month, you can get access to a lot of useful information. Not entirely free, but worth it.

Drawspace - hundreds of free drawing lessons.

Codeacademy is an easy way to learn how to code.It's interactive, fun, and you can learn with your friends.

Duke U - Duke offers many free courses on iTunesU.

Scitable is a free science library and personal learning tool that currently focuses on genetics, the study of evolution, variation and complexity of living organisms.

My own business - Offers a free online business administration course that will be useful to managers and anyone interested in starting their own business.

Kutztown University's free courses - The University of Pennsylvania's Small Business Development Center offers over 80 free online courses. The courses are individualized and self-contained. Many feature high quality graphics, interactive case studies and audio recordings.

Open Learn - Provides free access to Open University study materials.

Free Computer Books - free books and lectures on programming, mathematics, engineering.

Academic Earth - free video lectures of the world's leading scientists.

unplugthetv - The site randomly selects educational videos for you.

Lifehacker - tips and tricks to improve your life.

JustinGuitar - hundreds of guitar lessons.

DuoLingo - The site provides classes in various languages.

Open2study - Open2Study provides free high quality online education.In four weeks, you can learn something new, figure out how to take the next step in your career, challenge yourself, or simply satisfy your curiosity. Courses are from leading Australian institutions and are taught by academics and industry leaders.

OEDb - more than 10,000 online courses in various subjects and areas of knowledge.