Although Class Central lists online courses in 87 languages, courses made in English outnumber all of the others by more than six to one. English is therefore a useful language to know, even though some courses have subtitles in a range of languages. Earlier this year, we updated our list of courses to help improve your writing skills. These courses all assume some fluency in the language. But what if you do not know any English, or your English is very poor? If you do not have convenient acce

Subscriber growth and revenue are accelerating even as revenue per user declines. Udemy built its empire on a simple idea: anyone could create a course, and anyone could buy one. That marketplace model made Udemy famous and made millionaires out of its top instructors. Now the company is deliberately killing it. In Q3 2025 earnings call, Udemy’s CFO admitted they are “intentionally reducing” single course sales to push users toward subscriptions. The logic is straightforward: Udemy keeps 82.5%

Source: Udemy Investors page The merger is complete. That too, months before its second-half 2026 target. After three failed attempts and five months of regulatory and shareholder review, Coursera and Udemy have finally combined. Now comes the restructuring, the platform integration, and some unanswered leadership questions. The all-stock deal was first announced on December 17, 2025, and approved by stockholders on April 9, 2026. Each Udemy share was exchanged for 0.8 shares of Coursera. Udemy

An overview of CS50P, Harvard’s Introduction to Python, and your path to a free certificate .

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

Here are the best free online courses to learn OCaml, a general-purpose, statically-typed programming language that is widely used in academia and research institutions.