udacity.comの競合サイトトップ10

coursera.org

Earn a university-issued certificate from a top university. Gain the relevant skills and build unique portfolio that attract attention from recruiters and hiring managers. Learn online and earn valuable credentials from top universities like the University of Chicago and Rutgers University.

udemy.com

Udemy is an online learning and teaching marketplace with over 250,000 courses and 73 million students. Learn programming, marketing, data science and more.

edx.org

Find the online learning path for you, delivered by world-class institutions like Harvard, Google, Amazon, and more.

w3schools.com

W3Schools offers free online tutorials, references and exercises in all the major languages of the web. Covering popular subjects like HTML, CSS, JavaScript, Python, SQL, Java, and many, many more.

geeksforgeeks.org

Your All-in-One Learning Portal: GeeksforGeeks is a comprehensive educational platform that empowers learners across domains-spanning computer science and programming, school education, upskilling, commerce, software tools, competitive exams, and more.

stackoverflow.com

Stack Overflow | The World’s Largest Online Community for Developers

github.com

Join the world's most widely adopted, AI-powered developer platform where millions of developers, businesses, and the largest open source community build software that advances humanity.

developer.mozilla.org

The MDN Web Docs site provides information about Open Web technologies including HTML, CSS, and APIs for both Web sites and progressive web apps.