Master digital product design and collaboration with these top Sketch courses (including free ones) for designers and developers.

In 2025, Harvard CS50 offers 10 free certificate courses on topics such as computer science, Python, and AI.

In 2027, Duolingo is shutting down Duolingo for Schools, its free classroom tool that helped teachers track student progress and assign lessons. Coursera did the same thing last year, ending free course audits. It seemed sudden, but the signs were there. Class Central tracked the Duolingo for Schools shutdown too. And this time, the signs were all across social media platforms. Why the Shutdown? Duolingo for Schools was launched in 2015. Within a week, more than 10,000 teachers and 25,000 stud

Guide to the Wolfram U platform, which offers 220+ hours of courses with a free certificate of completion.