
HackerRank
CodeSignal
iMocha
TestGorilla
HackerEarth
DevSkiller
mettl
Codility provides a SaaS platform with advanced validation, security and protection features to evaluate the skills of software engineers.

HackerRank
LeetCode
CodeSignal
CodinGame
Coderbyte
Codewars
Project Euler
Sphere Online Judge created for the coders' community to train, to learn and to make progress.

Which is more popular?
Spoj might be a bit more popular than Codility. We know about 2 links to it since March 2021 and only 2 links to Codility.
Website, pricing, platforms and company facts side by side.
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In their own words, as submitted to SaaSHub.


The Codility platform includes: CodeCheck - Design role-specific remote skills assessments to screen your technical candidates before moving them to the interview stage. CodeLive - Host technical remote or onsite interviews via our shared editor using a range of templates and whiteboards....
No description of Spoj yet.
What each product offers, as listed by its team.


Possible disadvantages
Possible disadvantages
Walkthroughs and reviews on video.
An Introduction to Codility: The Tech Hiring Platform for Engineering Teams
WHY SPHERE ONLINE JUDGE (SPOJ) IS GREAT
How often each product is chosen within a category, 0–100% relative to the other.


Share your experience with using Codility and Spoj. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


Codility is a platform that helps companies assess the coding skills of developers. They offer a range of online coding tests and assessments that enable employers to evaluate candidates' technical abilities.
Sphere Online Judge (SPOJ) is an online judge that provides over 20k coding challenges. You are able to submit your code in an online editor. SPOJ also hosts their own contests and has an area for users to discuss...
Best qualities: SPOJ has tons of mind-boggling coding challenges that will really test your skills. There are contests as well for you to participate in to showcase your skills.
Recommendations tracked on public social media and blogs since March 2021.


- Technical skills: have they got the walk to match the talk? Programming languages on a resume mean little if candidates are unable to demonstrate their hard coding skills. You can test these skills with technical skill tests, such as... - Source: dev.to / over 2 years ago
Codility : Verify and improve coding skills. - Source: dev.to / over 5 years ago
Before Timsort, I knew of Tim some 20 years ago from the ranking and online forum of SPOJ[1], a Polish competitive programming website where he always seemed to top the speed leaderboards with unorthodox usage of Python. He's... - Source: Hacker News / about 2 years ago
Have you looked at spoj.com? It has a fair amount of different problems, some of them are pretty creative, you can take an inspiration from that. Source: over 5 years ago
When comparing Codility and Spoj, you can also consider the following products.

HackerRank is a platform that allows companies to conduct interviews remotely to hire developers and for technical assessment purposes.
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CodeSignal is the leading assessment platform for technical hiring.
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Practice and level up your development skills and prepare for technical interviews.
Compare LeetCode to Codility or Spoj:


TestGorilla ATS is an applicant recruiting software that helps companies hire candidates easily without any hassle.
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CodinGame provides users with a fun and effective way to learn coding that eschews the rigid structure of traditional teaching methods.
Compare CodinGame to Codility or Spoj: