Codewars is a coding practice platform where developers achieve mastery through solving programming challenges (kata) in over 55 languages.

Exercism is a 100% free platform offering coding practice, automated analysis, and world-class human mentoring across 78 programming languages.

TechGig is India's largest tech community platform for developers to practice coding, compete in hackathons, earn certifications, and connect with top tech jobs.

Edabit is a free online platform offering coding challenges and tutorials for beginners to master programming skills in various languages.

The Coding Train is a YouTube channel and community offering beginner-friendly tutorials for creative coding using p5.js and machine learning.

CodeSubmit is a technical interviewing platform for hiring engineers that uses real-world coding challenges and AI-powered insights instead of brainteasers.

NeetCode is an online platform providing structured resources and practice problems to help software engineers prepare effectively for technical coding interviews.

101 Computing offers free online programming challenges, computer science courses (GCSE/A-Level), and interactive coding tools for Python, HTML/CSS, and cryptography.

The technical blog of John Reilly covering deep dives into TypeScript, Azure DevOps, Node.js, React, and AI-assisted software development.

LearnVue is an online learning platform for Vue.js developers

The Front End Interview Handbook is a free resource offering quiz questions, coding challenges, and system design prep for busy engineers seeking front-end roles.

Frontend Practice is an online learning platform for frontend developers to enhance skills by recreating real company websites.

Kattis is the best platform for coding challenges and is used by companies to streamline their recruitment process.

Online Judge is the best platform for competitive programming and is used by students and professionals to enhance their coding skills.