
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.

Mercenaries 2: World in Flames
Hitman
Order and Chaos Online
Mass Effect: Andromeda
Deus Ex: Mankind Divided
Thief
jQuery
Prototype JavaScript framework

Which is more popular?
Based on our record, HackerRank seems to be a lot more popular than Prototype. While we know about 67 links to HackerRank, we've tracked only 4 mentions of Prototype.
Website, pricing, platforms and company facts side by side.
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| Website | hackerrank.com | prototypejs.org |
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What each product offers, as listed by its team.


Possible disadvantages
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
Prototype.js is recommended primarily for developers working on maintaining or upgrading older web applications that were originally built using this library. It's not advised for new projects, as there are more robust and widely-supported tools available today that offer better performance, features, and community support.
Walkthroughs and reviews on video.
How often each product is chosen within a category, 0–100% relative to the other.


Share your experience with using HackerRank and Prototype. 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 Prototype 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
It's very weird to realise that this isn't long enough to remember a time when extending native prototypes was en vogue. Source: over 3 years ago
The parent is referring to the Prototype framework (http://prototypejs.org/), not the JS language concept of a prototype. Source: about 4 years ago
Let's not forget about http://prototypejs.org/ & http://script.aculo.us/ for modern Web 2.O. - Source: Hacker News / over 4 years ago
When comparing HackerRank and Prototype, you can also consider the following products.

Practice and level up your development skills and prepare for technical interviews.
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Mercenaries 2: World in Flames offers a combination of exciting elements such as Action-Adventure, Third-person Shooter, Single and Multiplayer developed by Pandemic Studios and published by Electronic Arts.
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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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Hitman is the marvelous sixth installment in the Hitman series developed by IO Interactive and published by Square Enix.
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CodeSignal is the leading assessment platform for technical hiring.
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Experience and explore the games and other upcoming updates from Gameloft®. Find the game that will best fit your lifestyle!
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