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.

Is PHP dead? Absolutely not. Laravel (83K+ stars) is the undisputed industry leader. Its $57M Series A raise in 2024 proved it’s here to stay, cementing its status for one simple reason: Speed. It lets you ship complex apps faster and happier. The market agrees. Senior salaries are hitting $120K+, and giants like Pfizer and the BBC rely on it. But between serverless deployment (Vapor), real-time broadcasting (Reverb), and high-performance concurrency (Octane), the ecosystem is huge. Where to s

The new courses cover cybersecurity and SQL, and both offer a free certificate of completion.

Udemy has had its fourth leadership send-off this year. Chief Marketing Officer Genefa Murphy has resigned 2.5 years into her tenure to pursue other opportunities. This is after CEO Greg Brown’s exit in March 2025 after serving just two years CTO Eren Bali’s replacement in June 2025 CPO Prasad Raje’s transition out of his role (started October 2024 and ended in March 2025) Now it’s CMO Murphy. She was hired in July 2023, when Udemy’s Enterprise revenue was more than half of the total revenue

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

Here are the best online courses and resources to learn Lisp and its most popular dialects: Common Lisp, Scheme, Racket, and Emacs Lisp.