Best Coding Challenge Platforms with a Free Trial of 2025

Canditech presents a comprehensive testing platform designed to analyze both technical abilities and interpersonal skills through job simulation evaluations. These evaluations encompass a wide range of tasks, such as coding, SQL, Excel proficiency, open text responses, email interactions, and video submissions. Each assessment is automatically scored, which not only saves valuable time but also ensures uniformity in evaluation. Additionally, we provide pre-screening chatbots and one-way video interviews to deliver a more in-depth perspective on each candidate's capabilities. The platform guarantees a significant return on investment right from the start: ✅ Cut hiring time by 50% ✅ Eliminate 80% of unnecessary interviews ✅ Enhance the candidate experience ✅ Effortless integration with ATS systems

Woven is an automated technical assessment that focuses on experienced developers. Instead of just automating scoring, Woven's certified engineers assess candidate work. This allows for unique scenario types, such as Github Pull Request Reviews and Systems Design. This creates a more positive candidate experience for Senior Engineers in high demand, which reduces drop-off by half compared to automated assessments (40% vs. 15%). These more senior scenarios, which are more realistic, provide a better indication of who will pass the technical screens and the final round interviews. This saves engineers time. Interviews are often shortened by replacing take-home projects with woven customers and reducing the number of steps. NEW Detect ChatGPT cheating: Woven, the only technical assessment that has remote proctoring for all plans. Try ChatGPT with other platforms to see if their detection works!

AI-POWERED SKILL TESTING Vervoe makes it easy to make the right hiring decisions based upon performance. Vervoe's AI-powered software automatically grades any test and ranks candidates according job-related skills. You can choose from a range of industry-based assessments, including video interviews, coding assessments, and skills tests. Or, you can create assessments that are specific to your company. Vervoe is an intuitive, powerful way to manage and build your assessments. This will allow you to make confident hiring decisions.

Codility makes it easy to make great hiring decisions without having to waste time or cause frustration for recruiters. Engineer leaders can build high-performing, diverse teams by evaluating candidates based on their technical skills.

HackerEarth is a plug-and-play technical recruitment solution that is designed to help you build future-ready tech teams with a suite of tools for technical recruitment, upskilling and developer engagement. More than 4,000 companies across the globe use HackerEarth to improve the quality of their engineering hires and reduce the time spent by recruiters on screening candidates. With HackerEarth Assessments, you can identify the right candidates for the job by giving them programming assignments that simulate actual on-the-job tasks and shortlist only those candidates that meet your expectations. As a result, you can screen the best developers with ease and with zero bandwidth drain.

Enhance your team's capabilities through dedicated technical training, ensuring they reap the rewards of specialized education through a scalable strategy tailored to your organization's needs. For larger orders, discounts are offered, so don’t hesitate to request a customized quote. By enrolling your team, you'll unlock our entire course catalog, which features engaging interactive lessons, practical exercises, and recently introduced Skill Paths and Career Paths. We'll create a personalized guide to our offerings based on your team's objectives and connect you with an expert in coding who will facilitate chat-based support sessions. Should there be any personnel changes, you can effortlessly rotate licenses among staff, maintaining flexibility. Additionally, you will receive weekly updates on your team's progress in their learning journey. Focus on specific skills using our Skill Paths and foster internal growth by utilizing Career Paths for promotions and new hires. Effectively manage various training initiatives by categorizing team members into distinct groups and assigning only the most relevant content from our comprehensive course catalog to meet your team's unique requirements. This approach not only streamlines the training process but also boosts overall team performance.

Achieve your recruitment objectives and accelerate product delivery with the premier platform for assessing technical skills, designed to help you identify and recruit developers who possess the appropriate expertise. Traditional resumes often fail to reflect true capabilities; therefore, by utilizing objective skills evaluations, you can uncover the strengths and weaknesses of candidates, minimizing bias and broadening your talent pool to ensure you meet your hiring targets. This approach allows you to efficiently eliminate unqualified applicants, thereby saving your developers from interviewing unsuitable candidates and allowing them to dedicate more time to product development. By implementing a standardized hiring framework, you can maintain quality as you scale your team, raising the talent standard across your organization while attracting skilled developers. With all the necessary tools for conducting effective, real-world technical interviews that resonate with developers, you can seamlessly integrate this solution into your hiring process. Ultimately, this not only enhances your team's productivity but also fosters a more inclusive and skilled workforce.

CodinGame by CoderPad is an online pre-employment technical testing platform that recruiters, tech leaders and programmers use to quickly filter candidates at the beginning of their hiring process. Both test makers and candidates love it for its user-friendly interface. Easy to set up, built to customize. That's why Nasdaq, Huawei and Electronic Arts are using it already.

Xobin is an online candidate assessment software used by 5000+ teams to track, assess and interview top talent effortlessly. Whether you are conducting role based hiring assessments, tech hiring, large scale university recruitment or even employee skill gap evaluation, Xobin is the single solution that supports all these use cases. What makes Xobin unique is its full-stack capabilities. Xobin is a complete talent operating system with role based skill tests, psychometric assessments, video interviews and applicant tracking feature. All this along with a scientifically curated question library. Don't stitch together different solutions for your hiring and L&D needs. Just use Xobin. Screen based on skills and culture fit with Xobin’s online assessment platform. Xobin operates in 55+ countries, working with growth stage startups, mid-market and enterprises.

Conversations with native speakers are the best way to learn a language. The fastest way to learn code is to actually code. Edabit provides a wide range of small-sized challenges that will help you quickly improve your skills. Do you feel stuck between learning material that is too easy and too difficult? Once you have mastered the basics, you'll see that everything is suitable for both beginners and advanced coders. Edabit bridges the gap. You can start with the easiest level and move at your own pace until it's time to tackle the most difficult challenges. Edabit simulates programming in the real world, but removes the non-educational and tedious parts. To make learning fun and addictive, we add simple game mechanics. Level up, unlock achievements, and gain XP.

CodeScreen is a technical assessment platform. During the hiring process, it is usually quite challenging & time-consuming to assess a candidate’s technical skill level based on their CV, their educational background, or a 30-minute interview. To solve this problem, CodeScreen screens candidates with realistic and asynchronous coding assessments that are automatically graded, resulting in quickly identifying the best developers. This allows recruiters & developers that are normally more involved in assessing candidates to save time. Additionally, they receive a more accurate insight into the candidate’s future performance in their job.

When hiring developers, it's essential to be selective; bypass the generic approach and significantly reduce your screening time by leveraging automated coding assessments. This method allows you to pinpoint qualified candidates based on their actual coding abilities rather than relying solely on their resumes. Instead of traditional phone interviews, engage in pair programming to create a more efficient and effective interview process. You can observe candidates as they write code in real time, gaining insight into their problem-solving methodologies. CodeInterview is an innovative platform that facilitates seamless technical interviews within a collaborative coding environment. This online tool empowers candidates and interviewers to tackle coding challenges in real-time, utilizing a versatile online code editor that supports all popular programming languages. You can run code snippets and instantly view outputs directly in your browser, eliminating the need for any downloads or installations. Additionally, you can maintain clear communication with candidates through integrated audio and video features, enhancing the overall interview experience. The platform offers a user-friendly interface equipped with useful features such as syntax highlighting and code completion, making it an invaluable resource for both interviewers and candidates alike.

Skillspace by DPhi automates the assessment of on-the-job skills to help high-growth companies hire engineers and data scientists more quickly, cheaper, and more accurately. Skillspace AI is a great choice for recruiters because it offers a variety of features that can be used for remote, lateral, or campus hiring. Sign up for Skillspace AI to get the following: Right features - Skillspace offers 80+ languages, coding challenges, and automated project assessments. It also offers AI challenges and a lot more advanced, but still simple, ways to assess the talent pool. 2. Right company - AI enthusiasts and developers from 140+ countries have endorsed the product. Skillspace AI has evaluated more than 120K+ assessments. Companies using DPhi include startups, enterprises, and large corporations like Trell, Capgemini Cisco, Cisco, and Alibaba. 3. Remote-friendly - Skillspace AI gives you access to high-quality questions as well as a powerful proctoring engine to prevent cheating in your tests.

TestDome offers pre-employment testing for hiring tech workers and hiring in other industries such as programming, accounting, customer support, project management, and many more. -Our 1000+ questions test your ability to solve real-world problems. If you find any Premium questions online, you can get a refund. You can customize our ready-to use tests in any way you like or add your custom questions. -Compare candidates with one another at a glance, or dive deeper into the results and answers of individual candidates. -Prevent cheating with webcam monitoring, duplicate email detection and copy and paste protection -Add multiple users free of charge to your account.

Enhance your coding and interview abilities by preparing for technical interviews with our comprehensive resources tailored for top tech firms. Our platform features a user-friendly coding environment with a full-screen editor designed to facilitate problem-solving and practice for various challenges. You can tackle problems in over 10 programming languages and easily verify your solutions right on the platform. As a subscriber, you'll gain access to an extensive library of more than one million solutions contributed by fellow developers, enabling you to elevate your skills by examining how others approached the same tasks. Track your advancement with detailed progress reports for each completed challenge, earning points and badges while climbing the ranks among other developers as you take on more challenges. Recognized as the leading code assessment platform in the industry, we support screening, interviews, and take-home projects, with all subscription plans offering unlimited candidates, assessments, and user accounts, ensuring you have all the tools necessary for success. Each interaction on the platform not only hones your skills but also connects you with a community of learners.

CoderPad is a platform that allows you to conduct technical interviews and help lead development teams. It allows you to quickly and accurately assess a candidate's abilities. CoderPad functions as an IDE that allows candidates to easily share their skills and helps you understand how they work. It's there for you at every stage of the hiring process, through both collaborative coding sessions as well as take-home assignments. CoderPad is all about the developer experience. It is fast and reliable, and the interface is easy to use. It allows you to create a customized interview process that's specific to your team's needs. Because every team is unique -- and every candidate wants information about you during the hiring process. CoderPad will help you find better technical candidates faster. Both candidates and interviewers will enjoy an unparalleled experience with CoderPad. It's easy to scale up as your team grows. Nearly 2,000 companies worldwide rely on us.

Explore programming, design, and various other subjects at your convenience. Access comprehensive guidance tailored to help you secure an entry-level position in the tech industry, even if you lack prior coding experience. If you already have some knowledge, you can bypass certain topics with Compass. Keep your skills fresh and relevant by learning the essential languages, frameworks, and concepts that are crucial for thriving in today’s tech careers. Each of our Tracks offers a curated set of skills designed to provide you with focused learning experiences. Looking to acquire a new skill set? Simply enroll in a Track, and we’ll provide a clear path for your educational journey. Our courses feature quizzes and coding challenges that ensure you remain actively engaged, as hands-on practice is the most effective way to learn. Join our vibrant and encouraging community on the Treehouse forums, where you can connect, seek assistance, and interact with fellow learners who share your interests. Additionally, our Tech Explorer's Toolkit is filled with free resources aimed at anyone interested in pursuing a tech career, making it accessible regardless of where you are in your tech journey. With numerous avenues for support and resources at your disposal, embarking on your tech education has never been more attainable.

For your recruitment needs, we offer assessments that are not only efficient and precise but also equitable. By utilizing coding challenges, you can evaluate how applicants write, compile, and execute code effectively. Additionally, you can review their compilation history to gain insights into their thought processes. Our extensive repository features over 300 technologies, allowing you to design a test by selecting the most relevant questions tailored to your specific job requirements. Companies can personalize their testing experience with themed tests that reflect their website design and product branding. To maintain integrity, our application identifies if candidates are accessing ChatGPT's website, disqualifying them if they do so after an initial warning. Throughout the testing process, the application captures screenshots to ensure that applicants are not sourcing answers from the internet. We leverage AI technology to assess potential risks, ensuring that your applicant is the sole individual taking the test. Furthermore, we employ facial recognition to confirm a human presence, and a profile image report will be generated upon test submission for added verification. In this way, we prioritize both security and accuracy in the assessment process.

This platform stands out as a remarkable resource for administering online examinations and addressing any questions you may have regarding your preparation. It offers a user-friendly experience that significantly improves the flow of information. Serving as a comprehensive solution for online assessments, it aims to resolve your exam preparation challenges effectively. The interface is designed for ease of use, facilitating smooth communication of information. With straightforward registration, user-friendly features, and effortless test creation, it ensures a seamless experience from start to finish. You can easily sign in and navigate the platform with confidence, as it prioritizes secure data with encrypted information. The system generates results promptly, provides digital evaluations, and allows for the sharing of feedback to help you enhance your performance and achieve perfection. It features a unique combination of detailed analytics tailored to your skills and outcomes. We pride ourselves on offering exceptional support for all your inquiries. Our dedicated team of professionals is available around the clock to address your queries, ensuring that you receive the assistance you need when you need it. Additionally, we provide flexible subscription options that cater to your preferences for utilizing this online examination platform effectively. With such comprehensive features, it is designed to meet the diverse needs of learners and educators alike.

We are on a mission change the way businesses select, assess, and hire tech talent. We are a tech assessment platform that evaluates the practical abilities, knowledge, and interpersonal skills of tech candidates. The online tech assessments are used to assess the skills and abilities of candidates for tech jobs. There are many assessments that cover all major technologies. But what makes us unique is the ability to create custom assessments based on our customers' tech stacks or job roles. We enable recruitment teams to shortlist candidates quicker, with more confidence, and enable hiring managers have more insightful interviews.

Enhance Your Recruitment Process with Take-Home Coding Assessments. Discover exceptional talent through practical tasks rather than traditional puzzles. The CodeSubmit platform enables candidates to showcase their skills in genuine scenarios. Provide candidates with authentic engineering projects to be completed at their convenience. With CodeSubmit, you gain access to a collection of real-world assignments, a user-friendly candidate experience, and comprehensive analytics. You can also upload your own tasks, refine your hiring process through team collaboration, utilize tools that simplify evaluations, and ensure a fair and consistent experience for all candidates, along with numerous other beneficial features. To assist you in launching this initiative, CodeSubmit presents a library of meticulously designed tasks spanning over 60 programming languages and frameworks. You can create a personalized assignment in less than a minute. No matter if you are already incorporating take-home assessments into your hiring strategy or are just beginning to explore this method, CodeSubmit is prepared to support you every step of the way, ensuring you find the right fit for your team.

GigaMe stands out as the premier platform for Front end/UI developers aiming to excel in their interview preparations and achieve optimal success in securing job offers. Our resources are designed not only to help you apply your existing skills effectively but also to broaden your technical expertise. You will transform your comprehensive JavaScript coding knowledge into well-structured, accurate solutions. We offer straightforward and comprehensible methods for tackling challenges related to Object-Oriented JavaScript, data structures, and algorithms. By mastering progressive enhancement techniques and leveraging the capabilities of HTML5 and CSS3, you will develop a clear understanding of the latest features that enable you to create dynamic single-page applications. Additionally, we delve into ReactJS topics such as Higher-Order Components, state management, the Hooks API, reusable components, and ReduxJS, complete with practical examples and solutions. Our extensive database includes a wide range of over 500 real technical interview questions, coding challenges, and their respective solutions, ensuring that you are thoroughly prepared. With GigaMe, you can confidently face any interview scenario that comes your way.

Live coding in the browser with integrated audio/video call support. The one-stop shop for engineering interviews is now available. The power of Google Docs and the simplicity offered by a code editor. Collaborate with candidates in the most efficient and fastest manner possible during an interview. Interviews can be made easier by using this tool. Ask better questions and not leave the interview session. You can add your questions that are in line with your interview process. Our data security policy will keep them confidential and safe. You can connect via reliable audio/video to the other person at the same URL, without needing any additional software. Audio/video calls adapt well to changing internet so remote interviews can be done seamlessly. You will have centralized notes that show the candidate's journey from take-home assignment to interviews, which will help you make objective decisions.

Ace your programming interview with confidence, as it is a conquerable challenge. I will reveal effective strategies to tackle problems you've never encountered before, equipping you with the mindset needed to deconstruct complex algorithmic coding questions with ease. There’s no need for any previous computer science experience; I’ll swiftly bring you up to speed while avoiding tedious academic jargon. Big O notation serves as our primary tool for discussing an algorithm's runtime, allowing us to evaluate the efficiency of various problem-solving methods. Think of it as a fun, engaging form of math where you can skip the intricate details and concentrate on the overall concept. By utilizing big O notation, we characterize runtime based on how it scales with increasing input sizes, providing insight into performance as the input approaches infinity. Understanding this concept will empower you to make informed decisions during your coding journey.

Recruiters can quickly design assessments to screen thousands of candidates thanks to DoSelect’s extensive library, which includes over 50,000 questions across more than 25 coding languages as well as various fields like full-stack development, data science, AI/ML, databases, automation testing, and aptitude. The evaluation engine conducts a thorough analysis of skill quality, enabling you to effectively narrow down your candidate pool based on crucial skill insights required for specific job roles. From leaders in learning and development to training managers, DoSelect’s assessment engine empowers organizations to build a comprehensive skill inventory through practical tests and real-world evaluations, ensuring a clear alignment with competencies needed for success. By streamlining the identification of training requirements and facilitating quicker resource allocations, organizations can achieve improved project outcomes and enhance overall business performance significantly. Ultimately, the platform not only optimizes recruitment but also fosters a culture of continuous learning and skill enhancement within teams.