edX

This platform, edX, which was founded by Harvard and MIT in 2012, has partnered with Oxford University, Brown University, the Sorbonne, and Columbia University. Despite these famous affiliations, much of the content on edX is still free, allowing you to simply browse course information delivered via a combination of videos and quizzes. You have to pay if you want one of the edX certifications. The free "audit" version of the courses will not result in a signed document, but the paid "verified" version will provide you with a physical certificate.

In addition, you will almost always be able to submit projects and receive comments on them. However, prices vary greatly, with some recognized courses costing $169 and others costing thousands of dollars.

Pros:

• This platform contains amazing free offers and high-quality teaching from famous universities.

Cons:

• It is difficult to navigate and discover appropriate courses.
• The quality of a course can vary greatly.

Accessibility: Available via website and app

Teaching format: Videos and quizzes

Rating: 4/5

Website: edx.org