Skillsshare
One of the most popular online learning platforms. It has a huge collection of more than 27,000 categories such as: Lifestyle, Productivity, Business Analytics, Leadership & Management, Marketing, Animation, Film & Video, Graphic Design & Creative Writing, Photography & Web Development
It acquired one of the oldest e-learning websites called Lynda, and moved all the content to its own platform - LinkedIn Learning. The company now offers thousands of courses from beginner to advanced, such as web development, software programming, economics and business management.
https://www.linkedin.com/learning/
MasterClass
It is an online learning platform, what makes it different is that the courses are taught by international experts and celebrities. You can learn acting from Natalie Portman, filmmaking from Martin Scorsese, cooking from Gordon Ramsay, writing from Dan Brown, etc.
Udemy
It is an educational platform that has a huge library of over 150,000 courses which makes it the best when it comes to content. You can expand your knowledge and skills in any field imaginable from business and marketing to handicrafts and clowns.
edX
It is one of the best online course providers at the college level. The company was founded by Harvard and MIT, and the quality of the courses is top notch. All courses in edX, except for vocational education courses, are free to take
Udacity
Widely known for its Nanodegree, a skills- and project-based educational program. Each Nanodegree degree consists of a series of courses on topics such as artificial intelligence, coding, robotics, mobile programming, and business.
Coursera
It is an online learning platform that offers university level courses and certificate programs. Courses are taught by instructors from top companies and universities such as Stanford, Yale and Princeton.
There are thousands of courses with audit option that you can take for free
Futurelearn
It is an online learning platform that offers hundreds of courses from the world's leading universities. The majority of courses can be reviewed for free, but access to course exams and a statement of participation or certificate of achievement only becomes available if you upgrade to a paid course.