Best Coding Challenge Platforms - Page 2
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Compare the Top Coding Challenge Platforms as of April 2025 - Page 2
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Exercism
Exercism
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. -
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GigaMe
GigaMe
GigaMe is the best platform for Front end/UI developer to prepare for interviews and maximize successful interview outcomes. Our platform will help you to, not only utilize your skillset, but also to expand them as well. Bring your breadth of JavaScript coding knowledge to life in well-organized, precise solutions. We provide easy and understandable ways to solve problems in OO JavaScript, Data structures and algorithms. Learn to use progressive enhancement techniques and and technologies using HTML5/CSS3. Have a clear vision of some of the most exciting new features of HTML5 and CSS3 to develop single page application. Expand your knowledge on how to answer in-depth in ReactJS topics like HOC, State, Hooks API, Reusable component, ReduxJS with examples and solutions. We have covered a multitude of the questions asked from real technical interviews, consisting of more than 500+ problems, coding questions, and solutions. -
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Fairlane
Fairlane
Fairlane automates giving take-home challenges to your candidates. Cut down on phone screen time while giving your candidates a realistic coding test. Your engineers hate them because of the no shows, A/V issues and because it breaks their flow. Your candidates don't perform at their best because they're working in a completely different environment from what they're used to. You end up getting low signal from the phone screen and are not sure whether to move forward or not. With Fairlane, you can send candidates a link to a takehome challenge. When they click that link, candidates get time-limited access to their own GitHub repo. They can work on their project on their own, using their favorite IDE and tools. They will also be able to use all the integrations you'll have setup for the challenge (e.g: automatic test runs on commits with GitHub actions). We also let you know that the results are ready for review within Greenhouse.Starting Price: $99 per month -
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Intervue
Intervue.io
Live coding environment in the browser with integrated video/audio call support. One stop shop for engineering interviews has arrived. Power of Google docs and the simplicity of a code editor. Collaborate with candidates using the simplest and the fastest way possible over an interview. It is one of the best tools to take interviews. Ask better questions without leaving the interview session. Add your own questions that align with your interview process. Keep them confidential and secure with our data security policy. Connect via a Reliable audio/video with the other person on the same URL without downloading any additional software . Audio/video call adapts well to fluctuating internet to make sure remote interviews are done seamlessly. Get centralized notes that shows the candidate journey from a take home assignment to interviews helping you make unbiased decisions.Starting Price: $50 per month -
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Interview Cake
Interview Cake
The programming interview is a winnable game. I'll show you the tricks to quickly solve problems you've never seen before. I'll teach you the right way of thinking for breaking down tricky algorithmic coding interview questions you've never seen before. No prior computer science training is necessary — I'll get you up to speed quickly, skipping all the overly academic stuff. Big O notation is the language we use for talking about how long an algorithm takes to run. It's how we compare the efficiency of different approaches to a problem. It's like math except it's an awesome, not-boring kind of math where you get to wave your hands through the details and just focus on what's basically happening. With big O notation, we express the runtime in terms of—brace yourself—how quickly it grows relative to the input, as the input gets arbitrarily large.Starting Price: $149 per 3 weeks -
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Codela
Codela
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. -
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DoSelect
DoSelect
Recruiters can create assessments within minutes to evaluate thousands of candidates, thanks to DoSelect’s ready-to-use library with 50000+ questions spread across 25+ Coding Languages, Fullstack, Data science, Ai/ML, Database, Automation Testing, Front End Framework, Aptitude & many other technologies. The evaluation engine performs a deep skill quality analysis to help you refine your candidate list, with the skill insights that are critical to a job function. From L&D heads to training managers, DoSelect’s Learning and skill assessment engine is helping organizations create skill inventory through hands-on practice tests, real-world skill evaluations tests mapping, competencies, streamlining the training needs identification, faster resource deployments, better project deliveries and most importantly, a superior business outcome. -
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iMocha
iMocha
iMocha is an AI-powered Skills Intelligence Platform designed to transform how enterprises approach talent management. By turning every job role and every employee into a set of precise skills proficiencies, we're redefining the HR landscape with a skills-first approach. Whether it's strategic workforce planning, managing skills gaps, or enhancing employee development and retention, our platform provides crucial insights to drive HR and business decisions. iMocha delivers a holistic platform and solution for organizations to implement the "Skills-First" strategy via its next generation, patented and AI powered Skills Assessment and Skills Intelligence Platform - for Talent Acquisition (FTE and Contingent) and for internal Talent Development and Talent Management. Our customers globally include Deloitte, PayPal, Cap Gemini, E&Y, Reveture, Ericsson, Aston Martin, Vanguard, 711, Telstra, Daimler Trucks, ABSA SA, Avayya, Vanguard, 9 different UN Agencies). From the 500+ customer -
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ExpertRating
ExpertRating
Have your skills certified through the same platform used by Walmart, Google, IKEA, Ericsson, GAP and Amazon. ExpertRating is a trusted name in pre employment testing services offering cutting edge employment testing solutions to business giants such as Ericsson, Fox News, Elance, Convergys, GAP and IKEA to name a few. ExpertRating is currently one of the few employee testing companies in the world to have been certified under ISO 9001-2015 for its skills testing and training systems. ExpertRating offers in-depth online courses, tutorials and eBooks to individuals and employers at affordable prices. The ExpertRating online learning resources have been developed under ISO 9001-2015 procedures. ExpertRating is a leader in Online Certification and Skill Testing and offers an affordable and efficient way for people to prove their expertise in over 300 widely accepted online certifications. ExpertRating certifications have been taken by over 3 million individuals in more than 60 countries. -
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SHL Coding Interview is more than just an online coding test, it is an AI-powered online live coding interview for hiring. Our Coding Interview platform provides a familiar coding environment for technical interviews. Our interactive IDE provides support for coding assessments in python, SQL, C, Java, and 50+ more programming languages. It provides AI-assisted insights on candidate’s code quality and state of mind, and full interview record and replay. Conduct live audio and video interviews with structured evaluation. Use live chat, audio, and whiteboarding to engage candidates and provide direction whilst testing their programming skills. Add feedback and comments during the interview. AI-powered coding insights that highlight stylistic errors, multi-line, and single-line code insertions in real-time. Interviewers can conveniently annotate various aspects of the online coding test including the code, whiteboard, discussion, and make it available for future reference.
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Topcoder
Topcoder
Topcoder is the world’s largest technology network and on-demand digital talent platform with more than 1.6 million developers, designers, data scientists, and testers around the globe. Topcoder empowers organizations including Adobe, BT, Comcast, Google, Harvard, Land O’Lakes, Microsoft, NASA, SpaceNet, T-Mobile, US Department of Energy, Zurich Insurance, and more, to accelerate innovation, solve challenging business problems and tap into hard-to-find technology skills. Topcoder was born in 2000. We’ve listened to our customers through the years and created 3 useful ways for you to engage and execute with our amazing talent. Incredible digital and technology talent, ready to work. Scope, start and execute work much faster. Better talent, better outcomes. It’s not rocket surgery. You’re not alone. Access traditional professional services if you want extra guidance. You don’t have to change. Tap open APIs and integrations to work in approved environments. -
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SPOJ
Sphere Online Judge
The SPOJ platform is centered around an online judge system, which serves for the automatic assessment of user-submitted programs. Some of its most important features include support for more than 45 programming languages and compilers, including C, C++, Pascal, JAVA, C#, Perl, Python, Ruby, Haskell, Ocaml, and esoteric languages. A rapidly growing problem-set of about 13000 tasks available for practice 24hours/day (in English, Polish, Vietnamese, Portuguese and other languages), including many original tasks prepared by the community of expert problemsetters associated with the project. A flexible testing system, supporting dynamic interaction with submitted programs and highly customisable output of assessment results. Intuitive browser-based content management which allows users to set up their own contests within a matter of minutes, and to make use of tasks already available in the system. More than 2400 contests hosted as of 2012. -
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Filtered
Filtered
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! -
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AtCoder
AtCoder
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. -
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InterviewBit
InterviewBit
Brush up your skills or learn from scratch. Increase your pace of learning & even get certified with our to the point byte size fast track courses around 20 most important topics such as data structures and algorithms programming dynamic programming etc. Understand the solutions and concepts much faster with video explanations. Created by our experts working at your dream companies, these videos will make you more structured and confident with your reasoning. Based on the pattern we have seen in most technical interviews, same set of questions tend to get repeated. We have covered most of the questions here on the site itself. So, you should be very comfortable with a tech interview after completing the course. We found that a lot of candidates who knew about the approach to solving a problem failed because of bad implementation skills. That's one of the reasons, we make it a point for you to write code and practice, so that over time, you write bug-free code in one go. -
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Talent Titan
Talent Titan
Talent Titan's SAAS and TurnKey Recruitment and Training solutions revolutionize Hiring and Workforce development. With well-integrated, automated solutions for Candidate Attraction, Gamified Assessments/AI screening and Candidate Engagement, Talent Titan streamlines the entire Talent Attraction workflow to enable Talent Acquisition teams across the globe higher Top Talent at scale. Our unique Training solutions enable organizations to train their distributed workforces in a standardized and scalable manner. Our platform also connects Job Seekers with Top-Tier Organizations through exclusive hiring drives, offering priority access to lucrative job positions. Join us to experience a cutting-edge approach to scalable hiring, training and cultivating a thriving workplace culture. -
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DojoCode
DojoCode
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. -
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HirePro
HirePro
AI-powered platform for faster and better sourcing, screening, assessments, interviews and onboarding. Built by a team of experts with 20+ patents. Auto proctored assessments and interviews to ensure authenticity and integrity of the recruitment process. The sole technology platform which offers complete remote recruitment. Find the best talent from anywhere, any time at any scale. Choose from over 2,000 pre-built questions in 28 programming languages. Design tests for screenings, capability assessments, or hackathons based on your needs. Create an intuitive interface with a feature-rich coding editor backed by the platform. Automatically detect and control cheating with AI-powered live and automated proctoring. -
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Codewars
Codewars
Achieve mastery through challenge. Improve your skills by training with others on real code challenges. Challenge yourself on kata, created by the community to strengthen different skills. Master your current language of choice, or expand your understanding of a new one. Solve the kata with your coding style right in the browser and use test cases (TDD) to check it as you progress. Retrain with new, creative, and optimized approaches. Kata are ranked to approximate difficulty. As you complete higher ranked kata, you progress through the ranks so we can match you with relevant challenges. Compare your solution with others after each kata for greater understanding. Discuss the kata, best practices, and innovative techniques with the community. Author kata that focus on your interests and train specific skillsets. Challenge the community with your insight and code understanding. -
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AlgoExpert
AlgoExpert
AlgoExpert is a paid online platform that helps software engineers prepare for technical interviews. It offers a curated set of 150 data structures, algorithms, and problem-solving questions that span 15 categories and 4 difficulty levels. Each question comes with a 2-part video explanation that provides a conceptual overview of the algorithm, including how best to approach, implement, optimize, and analyze the problem. Then, it gives a walkthrough of the code in Python.Starting Price: $99 -
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CodeChef
CodeChef
CodeChef was created as a platform to help programmers make it big in the world of algorithms, computer programming, and programming contests. At CodeChef we work hard to revive the geek in you by hosting a programming contest at the start of the month and two smaller programming challenges at the middle and end of the month. We also aim to have training sessions and discussions related to algorithms, binary search, technicalities like array size and the likes. Apart from providing a platform for programming competitions, CodeChef also has various algorithm tutorials and forum discussions to help those who are new to the world of computer programming. Try your hand at one of our many practice problems and submit your solution in the language of your choice. Our programming contest judge accepts solutions in over 55+ programming languages. Preparing for coding contests were never this much fun! Receive points, and move up through the CodeChef ranks. -
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Codeforces
Codeforces
Codeforces is a project joining people interested in and taking part in programming contests. On one hand, Codeforces is a social network dedicated to programming and programming contests. On the other hand, it is a platform where contests are held regularly, the participant's skills are reflected by their rating and the former contests can be used to prepare. Codeforces constantly develops and we plan to improve the platform to give the participants the opportunity to organize their own contests, filling the project with learning content, developing Codeforces as a training and learning platform. Contests are regularly held on Codeforces. Participating in them is free and open to everybody. Every month we organize approximately six contests. To participate, you have to be registered on the site (if you have an OpenID or a Gmail account, then you won't even have to memorize the password) and register for the oncoming contest. Make sure that you are present in the list of the users. -
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AdaptiLab
AdaptiLab
The best coding challenge platform for evaluating machine learning, data science, and software engineering ability. Create an AdaptiLab challenge in a few clicks based on your job description. Automatically send emails to candidates for them to access the coding challenge. Streamline your hiring process by comparing the top performers on the AdaptiLab challenge. Our code challenges assess the hardest skills to evaluate for in an environment optimized for the candidate experience. Challenges are automatically generated by our internal AI and customized specifically for your job description. Evaluate candidates in the hardest fields to assess: machine learning and data science. Improve your existing interview process’s signal with a library of 1000+ industry machine learning and data science questions -
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Andela
Andela
Get matched with vetted engineers from around the world and hire them without the overhead. Spend less time interviewing and more time building by connecting with engineers we’ve already assessed. Tap into a talent pool that spans multiple regions and multiple countries. The best engineers aren’t always in your backyard. Identify the best-fit engineers from our network through our proprietary data-driven, matching process. From helping with onboarding to sharing best practices, our success team is there every step of the way. Grow your engineering team with global talent today. Tell us what you are looking for, we’ll take care of the rest. Brilliance is evenly distributed, but opportunity is not. There are talented individuals everywhere, but all too often their potential is limited by arbitrary factors like race, gender, nationality, and more tangibly, through challenges of operating globally. We exist to unlock human potential at scale. -
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Unstop
Unstop
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. -
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CodeTrac
MeritTrac Services
MeritTrac's Coding Assessment platform, CodeTrac, is designed to help organizations efficiently recruit top programming talent. It offers a performance-based, online coding test environment that integrates various domain-based tests, enabling recruiters to assess candidates' software development skills in real time. With a broad programming language library, including Java, C, SQL, PHP, and more, it allows for customizable coding scenarios to match business needs. The platform's auto-evaluation feature generates detailed reports, offering insights into code quality, readability, and performance, aiding in faster, more informed hiring decisions. It also supports project-based testing for a comprehensive evaluation of a candidate's abilities. -
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LintCode
LintCode
Coding Interview Question Online Training System. Focus on algorithm. No parsing input/output anymore. Industrial standard lint helps you write the most beautiful code. Step by step training. Coding for fun. Want more practises can filter by difficulty, algorithm and data structure? Check out our interview questions. LintCode has the most interview problems covering Google, Facebook, Linkedin, Amazon, Microsoft and so on. We provide Chinese and English versions of the challenges. Solve challenges such as: Implement an API to Access User Data, Implement Decorator with Parameters, Exception Handling, Implementing a shopping cart program, Replace the elements in a string, The number of the two numbers in the list whose sum is equal to n, Print out SMS verification code, Import a module and alias it, Importing a module, Search for a lecturer number, Print Zero, Even and Odd Number Interleave, Implement timer decorator, and many more.