Codewars
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Exercism
Treehouse
edX
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TrueCert
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TrueCert is a skills-verification platform built for developers and the teams that assess them. Instead of trusting a resume line or a years-old certificate, candidates take a short, practical assessment and earn a credential anyone can verify.
The assessments go beyond multiple choice. Ordering, matching, code-completion, and short-answer formats test whether someone can actually do the work, not just recognize a fact, and partial credit means a near-miss is scored fairly. Every result comes with a topic-level breakdown (strong on networking, developing on cost optimization) so the score is actionable, not just a pass or fail.
For employers and recruiting agencies, TrueCert is a screening tool: send candidates a 10-minute practical test before the interview, then verify each result independently through a shareable link. No proctoring, no testing-center friction. For individuals, a passed assessment becomes a verifiable, shareable credential to prove skills to employers.
Assessments span more than 120 titles across 15 categories, including Terraform, Kubernetes, Docker, AWS, Azure, Linux, Python, SQL, and more.
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Codewars is recommended for beginner to advanced programmers who enjoy learning through practice and are interested in improving their algorithmic thinking and coding skills in a gamified environment. It is particularly beneficial for those preparing for coding interviews or seeking to reinforce their programming knowledge in a fun and interactive way.
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TrueCert's answer:
Most tools do either screening or credentialing. TrueCert does both, so a passed assessment is both a hiring signal an employer can independently verify and a credential the candidate owns and can reuse. The assessments test application rather than recall, results are checkable without taking anyone's word, and the catalog spans 175+ certifications across 15 categories (DevOps, cloud, AI, databases, office, collaboration, and more), with a free introduction tier and paid assessments from $14.99.
TrueCert's answer:
Two connected groups. First, developers and technical professionals who want to prove their skills with a credential employers can verify. Second, the employers and recruiting agencies who screen them, teams that want to test candidates before the interview, or map and validate their own team's skills. Strongest fit for DevOps, cloud, and platform roles.
TrueCert's answer:
TrueCert started from a simple frustration: resumes and years-old certificates are claims, not evidence, and heavyweight proctored exams are expensive and test recall over real ability. We built a lightweight way to prove what someone can actually do, practical assessments that produce a verifiable, shareable credential, so skills can be trusted without a testing center or a leap of faith. Built and operated by idealy AB in Sweden.
TrueCert's answer:
TrueCert is a browser-based web application with nothing to install. It integrates Stripe for payments, standard OAuth sign-in (Google, GitHub, Microsoft), and issues Open Badges 2.0 credentials with QR-based public verification.
TrueCert's answer:
TrueCert combines two things usually sold separately: practical skills testing and verifiable credentials. Candidates take short, hands-on assessments that go well beyond multiple choice, drag-to-order, matching, multi-select, code completion, predict-the-output, fill-in-the-blank, and scenario-based questions, all with partial credit so a near-miss still scores fairly.
Every result becomes a shareable credential anyone can verify through a public link, no proctoring or testing center required, and each comes with a topic-level breakdown of strengths and weaknesses, so the score is actionable rather than just a pass or fail.
Based on our record, Codewars seems to be more popular. It has been mentiond 160 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
Recently, I was working on a coding kata on codewars.com. Early on, I started thinking that a potential solution might utilize recursion, a concept that involves a function calling itself. However, I quickly realized that my grasp of recursion was not as solid as it needed to be for this task. In this post, I will share the insights gained from deepening my understanding of recursion while working through the kata. - Source: dev.to / over 2 years ago
Get more involved. Look into internships and junior SWE positions to get a sample of what you'd be applying for once you graduate. Solve coding challenges, start working on a portfolio of your personal works. I recommend codewars.com for coding challenges, it's fun. Source: over 2 years ago
I'd recommend to play around with some basic coding challenges on leetcode.com or codewars.com. If the course prepared you well you won't find this useful, but playing around with them will make sure that you are comfortable with basics such as loops, if statements etc. Source: about 3 years ago
I would advise for you to start with Python, it's a beginner-friendly programming language and it'll help with wrapping your mind around things. Play around with it, perhaps do some katas on CodeWars and you'll be set. Source: about 3 years ago
There is a website called codewars.com where you can select problems of varying difficulty for the language you need. It is very helpful for learning. Source: about 3 years ago
Codecademy - Learn the technical skills you need for the job you want. As leaders in online education and learning to code, weโve taught over 45 million people using a tested curriculum and an interactive learning environment.
TestGorilla - TestGorilla ATS is an applicant recruiting software that helps companies hire candidates easily without any hassle.
Exercism - Download and solve practice problems in over 30 different languages.
HackerRank - HackerRank is a platform that allows companies to conduct interviews remotely to hire developers and for technical assessment purposes.
Treehouse - Treehouse is an award-winning online platform that teaches people how to code.
CodeSignal - CodeSignal is the leading assessment platform for technical hiring.
