From setting up your first Pi to creating smart home devices and mini servers, explore the versatile world of computing with the best free courses on Raspberry Pi programming and projects.

In January each year, Class Central publishes a list of the most popular online courses released by major course providers in the previous 12 months. The most popular course in the latest list turned out to be Google AI Essentials, launched by Coursera in April, 2024. More than 900,000 learners have enrolled, more than the combined total of all new courses launched on edX, FutureLearn, and Swayam in the same year. What’s even more surprising is that (unlike the vast majority of Coursera course

Explore the wonders of biodiversity, interspecies relationships, and conservation in a variety of ecosystems with the best ecology courses.

Update (April 2026): On April 9, shareholders of both companies voted overwhelmingly to approve the merger — 99.4%% at Coursera, 99.9%% at Udemy. The deal is expected to close in the second half of 2026. I also dug into the 300-page merger prospectus and found that Coursera approached Udemy three times over two years before getting a yes, and that Pluralsight’s owner made a competing cash offer. Read the full merger history. TL;DR Coursera is acquiring Udemy in an all-stock deal worth ~$1.8 b

Prepare for exams or boost your knowledge of organic chemistry with the best courses from universities, specialist tutors, and YouTube instructors.

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