Best Free Coding Challenge Platforms

Develop your team with technical training. Give your team the benefits of technical education — all in a scalable plan that works for your organization. Discounts are available for high-volume purchases. Request a personalized quote today. Give your team access to our full catalog, including interactive lessons, practice, and our brand new Skill Paths and Career Paths. We’ll curate a custom guide to our catalog based off of your team’s goals, and pair you with a dedicated coding expert to host chat-based help sessions. Team changes? No sweat — you’ll have unlimited flexibility to rotate licenses between employees. Plus, get weekly reports on your team’s learning progress. Level up specific concepts with skill paths and promote or hire from within with career paths. Manage multiple training programs with ease by assigning team members to different groups. Get access to our full course catalog and only assign content that fits your team’s needs.

Learn to code — for free. Build projects. Earn certifications. freeCodeCamp is a donor-supported tax-exempt 501(c)(3) nonprofit organization (United States Federal Tax Identification Number: 82-0779546) Our mission: to help people learn to code for free. We accomplish this by creating thousands of videos, articles, and interactive coding lessons - all freely available to the public. We also have thousands of freeCodeCamp study groups around the world. Donations to freeCodeCamp go toward our education initiatives, and help pay for servers, services, and staff. Since 2014, more than 40,000 freeCodeCamp.org graduates have gotten jobs at tech companies. Join a community of millions of people learning to code together for free. freeCodeCamp is a proven path to your first software developer job. If you are new to programming, we recommend you start at the beginning and earn these certifications in order. To earn each certification, build 5 required projects and get all their tests to pass.

Codeaid is a Free Coding Testing Platform designed to help recruiters and companies hire the best software developers by testing them with robust, everyday projects that show their on-the-job skills. This platform will allow you to evaluate candidates by testing not only specific languages or frameworks but also coding fundamentals and application design concepts while having the most automated test scoring system and the longest duration of tests on the market. Main Features: - In-depth take-home coding test system based on real-world developer workflows and challenges - A unique Git-based testing system that simulates a “real-life” environment - The most precise and granular automated scoring system - A built-in plagiarism checker that accurately detects copied or inauthentic work - Easy cancellation of tests or extension on the challenge time limit - One centralized dashboard for accessing all data from one place ... and so much more!

TestDome provides pre-employment testing for tech hiring and hiring in other industries, including programming, accounting, customer service, project management, and more. -Our 1000+ Questions test real-world problem solving. Get a refund if you find any of our Premium questions answered online. -Customize our ready-to-use tests any way you want or add your own custom questions. -Compare candidates to one another at a glance or dive deeper into an individual candidate’s results and answers. -Prevent cheating using webcam monitoring, duplicate email detection, and copy and paste protection. -Add multiple users to your account at no additional charge.

CoderPad is a technical interview platform for leading development teams. It enables a quick, accurate read on a candidate's skills. CoderPad works like an IDE to help candidates easily share their skills and help you understand how they work. Through both collaborative coding sessions and take-home assignments, it’s with you at every stage of the hiring process. CoderPad puts the developer experience first. Its speed and reliability are second to none -- and the interface is intuitive and simple to use. It provides a canvas for you to create a personalized interview process that is unique to your team’s needs. Because every team is different -- and every candidate wants to learn about you in the hiring process. CoderPad helps you find better technical candidates - faster. It delivers unparalleled experience to both interviewers and candidates. And, as your team grows, it's easy to scale. That’s why nearly 2,000 companies around the world rely on us.

Practice makes perfect, and Showcode challenges are the perfect opportunity to learn by doing. If a certain challenge doesn’t go well, you can go back and practice afterwards. You can build up a profile of achievements, badges and certificates. Share your profile and show companies your potential based on coding ability, rather than qualifications or experience. 84 Teams spread over 6 leagues battle head-to-head for points. Sign up to win awesome prizes and get in front of top brands. There is a total of 13 challenges to complete, 
each one taking about an hour to complete. A challenge is open for 2 weeks and only your first submission will count for scoring. Each coder can contribute points towards their University by completing a challenge. The team with the highest points (taken from the top 10 individual scores) will win the fixture and obtain 3 points. The top 10 coders from the 5 teams in each league will battle it out in the Unicode 20/21 Grand Finale to claim top spot.

Level up your programming skills with 3,450 exercises across 52 languages, and insightful discussion with our dedicated team of welcoming mentors. Exercism is 100% free forever. There are 52 different language tracks on Exercism for you to explore. Which one will you choose to learn first? Learning through Exercism is quite different to other programming websites, with a focus on individual practice and mentor-based learning. Here's how it works. Object oriented, functional, popular, emerging, or just plain obscure. With 52 different languages to explore, Exercism has something for you! All the coding happens on your machine in an environment you're familiar with. Download the template, solve the problem, and then upload your solution. Discussing code is one of the best ways to learn. Our friendly mentors will comment on your solutions online, introducing you to new ideas and techniques. Our tracks have between 40 and 100 exercise each.

Improve your coding skills with practice questions and become a better developer. Observe your strengths & weaknesses. Try to solve all questions to master your programming skills. Easily keep track of your progress and stay motivated. By solving previously asked interview questions, become more familiar with the interview processes and get your dream job. Track the scores and reports of all candidates on the cloud based platform of Codela. Select a ready-to-send Codela test or create your own coding challenges.

Filtered is the end-to-end hiring platform for emerging technology. Filtered enables your business to overcome today’s tech hiring challenges and assess a candidate’s true fit for the job, team, and company through capabilities-based hiring. Our approach uncovers previously hidden applicant insights and measures their true match, not only to the job but with your business goals. Choose from one or many of our dynamic project-based templates, customize your own, or copy and paste your job description for maximum efficiency through automation. Segment, share, review, change status, and comment on candidate performance while taking advantage of our anti-fraud and anti-bias functionality all in one, user-friendly interface. Schedule and conduct your second round interviews all within our platform using our scheduling tools and video-based live coding and whiteboarding functionality. Tie it all back to the candidate!

AtCoder is a programming contest website based in Japan. AtCoder is a programming contest site for anyone from beginners to experts. We hold weekly programming contests online. Every AtCoder users can use this library with minimum efforts of studying about PC. Maximize convenience for the usage in competitive programming. We completely ignore other usages. Participants can use any programming language used in AtCoder Regular Contest. Unless otherwise specified, you must compete in a contest alone. We do not allow you to team up form with others. The contestant who gives successful solutions to the largest number of problems in a given time will be the winner. If there are multiple contestants who have solved the same number of problems, whoever has done so in shorter time will be in the higher place. Execution time is measured as the maximum of real time and CPU time. Parallelization is not prohibited, but it does not lead to shorter execution time.

DojoCode is a community-driven platform that offers a variety of coding challenges and contests across different programming languages and skill levels. Our mission is to make coding education interactive, enjoyable, and accessible for everyone.

Unstop (formerly Dare2Compete) enables companies to discover, assess, and hire the right talent through accurate coding, non-tech and skill-based assessments, remote hiring platform, virtual recruitment platform, hackathons, coding challenges, and other gamified engagements like quizzes, case competitions, student challenges, etc.