
LeetCode
Codility
CodeSignal
iMocha
HackerEarth
Codewars
TestGorilla
HackerRank is a platform that allows companies to conduct interviews remotely to hire developers and for technical assessment purposes.

Buddy
CircleCI
Jenkins
Limestone Networks
Codeship
Codero
DeployBot
Everything you need to run your code on any cloud.

Which is more popular?
Based on our record, HackerRank seems to be a lot more popular than Cloud 66. While we know about 67 links to HackerRank, we've tracked only 4 mentions of Cloud 66.
Website, pricing, platforms and company facts side by side.
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| Website | hackerrank.com | cloud66.com |
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In their own words, as submitted to SaaSHub.


No description of HackerRank yet.
Cloud 66 gives you everything you need to build, deploy and maintain your applications on any cloud, without the headache of dealing with "server stuff". With the convenience of PaaS but on any cloud, and in any region, Cloud 66 has persistent storage, custom network configuration, zero downtime...
What each product offers, as listed by its team.


Possible disadvantages
An editorial look at what each product does well and who it suits.


Overall verdict
Why this product is good
Recommended for
HackerRank is recommended for students, individual learners, and job seekers looking to improve their coding skills, as well as for companies seeking an efficient way to evaluate candidates' technical abilities during the hiring process.
Overall verdict
Why this product is good
Recommended for
Cloud 66 is recommended for small to medium-sized development teams, particularly those working with Rails, Node.js, containerized applications, or microservices. It's a great fit for organizations looking to streamline their DevOps processes, improve deployment efficiency, and leverage cloud infrastructure without investing heavily in in-house DevOps expertise.
Walkthroughs and reviews on video.
Is HackerRank A Good Idea?
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Cloud 66 in under 90 seconds
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How often each product is chosen within a category, 0–100% relative to the other.


Share your experience with using HackerRank and Cloud 66. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


What are LeetCode and LeetCode alternatives good for?LeetCode💡Interested in leveling up your career? Apply to the Formation Fellowship...
HackerRank’s challenges cover a wide range of topics and difficulty levels, allowing developers to enhance their problem-solving skills and learn new algorithms and data structures. The competitive nature of...
HackerRank offers a wide array of challenges across various domains such as algorithms, mathematics, SQL, and functional programming. Its interface is user-friendly, and the platform provides detailed feedback on...
We have no reviews of Cloud 66 yet. Be the first one to post
Recommendations tracked on public social media and blogs since March 2021.


This way, you transfer what you already know (problem-solving) but only change the syntax. Platforms like Hackerrank are also great to solve the same problem in different languages and learn from other people’s solutions. - Source: dev.to / about 1 year ago
Firstly, solve some common data structure problems with it. Implement some data structures like arrays, linked lists, stacks, queues, etc. You can check common problems on LeetCode, Hackerank or some other resources. - Source: dev.to / over 2 years ago
I don't have a consecutive internet connection and I can't keep up learning process so I started practicing in hackerrank.com I have started some challenges in python and c++ there. Thus I have no internet connection so I cannot practice... Source: almost 3 years ago
You can deploy and manage any application (Rails, Jamstack, Containers) on any cloud with cloud66.com. Source: about 4 years ago
If you want some oomph and production-quality stuff, bring your own hardware to hatchbox.io or cloud66.com. Source: about 4 years ago
Https://cloud66.com is the best alternative that runs on your own cloud and is native for Rails apps. - Source: Hacker News / over 4 years ago
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Codility provides a SaaS platform with advanced validation, security and protection features to evaluate the skills of software engineers.
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Jenkins is an open-source continuous integration server with 300+ plugins to support all kinds of software development
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