10 principais hackerrank.com concorrentes

codechef.com

CodeChef | CodeChef: Practical coding for everyone

coderbyte.com

Evaluate your AI-powered workforce quickly, accurately, and affordably with unlimited technical assessments and interviews.

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.

topcoder.com

Architecture NOTE: This track is being redeveloped. Today you will find more architecture style challenges bei

w3schools.com

W3Schools has created an animated HTML Tutorial like you have never seen before! The video contains 23 chapters, covering the basics of how to create a web page using HTML. The animated teacher will guide you through the subjects in a fun new format!

codeforces.com

codeforces. programming competitions and contests, programming community

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.

sql-practice.com

practice sql querys with an online terminal. solve sql query questions using a practice database. learn and improve your sql skills.

programiz.com

Stories, news and inspirations for programmers from Programiz.

stackoverflow.com

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