
HackerRank
Project Euler
Codewars
Exercism
CodeForces
interviewing.io
Coderbyte
Practice and level up your development skills and prepare for technical interviews.

SonarQube
CodeClimate
CodeFactor.io
ESLint
Coveralls
Snyk
SensioLabs Insight
Automatically reviews code style, security, duplication, complexity, and coverage on every change while tracking code quality throughout your sprints.

Which is more popular?
Based on our record, LeetCode seems to be a lot more popular than Codacy. While we know about 544 links to LeetCode, we've tracked only 4 mentions of Codacy.
Website, pricing, platforms and company facts side by side.
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| Website | leetcode.com | codacy.com |
| Pricing | ||
| Company | — | Startup from Portugal · 1 - 9 employees · 2012 |
| Listed in |
In their own words, as submitted to SaaSHub.


No description of LeetCode yet.
Codacy automates code reviews and monitors code quality on every commit and pull request reporting back the impact of every commit or pull request, issues concerning code style, best practices, security, and many others. It monitors changes in code coverage, code duplication and code complexity....
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
No analysis of Codacy yet.
Walkthroughs and reviews on video.
Is A LeetCode Premium Subscription Worth It?
More videos
Using Codacy for automated code reviews
More videos
How often each product is chosen within a category, 0–100% relative to the other.


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


LeetCode is a renowned online platform offering a compendium of coding challenges that enable software developers to sharpen their programming prowess, facilitating their preparation for technical interviews. This...
What are LeetCode and LeetCode alternatives good for?LeetCode💡Interested in leveling up your career? Apply to the Formation Fellowship...
In the quest for coding excellence, developers often seek platforms that not only challenge their skills but also make the learning process engaging and fun. While Leetcode has been a staple in the coding community...
Each of these tools offers unique advantages that make them compelling alternatives to SonarQube, depending on organizational goals, budgets, and technology stacks. Codeant.ai and Codacy provide user-friendly...
Codacy is a popular code analysis and quality tool that helps you deliver better software. It continuously reviews your code and monitors its quality from the beginning.
Secondly, while SonarQube offers security analysis, Codacy provides a more holistic approach to security, including features like supply chain security and secret detection out of the box. Added to this are Codacy’s...
Recommendations tracked on public social media and blogs since March 2021.


General Coding Assessment (GCA): the harder of the two, but manageable with preparation. It's done on CodeSignal, either in person or online. To prepare, practice DSA questions on competitive programming sites like LeetCode, Codewars,... - Source: dev.to / about 2 months ago
Category Tool URL How I used it General AI assistant ChatGPT Https://chatgpt.com Breaking down concepts, simulating interviewers, reviewing answers AI writing / reasoning Claude Https://claude.ai Refining behavioral stories and... - Source: dev.to / 4 months ago
Plain BST. Fine when input is random or the problem doesn't require worst-case guarantees. Tree problems on LeetCode typically assume balanced input and don't ask you to maintain balance yourself. - Source: dev.to / 5 months ago
I'm trying to use Codacy to review my code. One of the issues is regarding the use of the "setcookie" function. Source: almost 5 years ago
Does anyone have an example on how to get this conversion done on github actions where I can convert the *.coverage file into a *.xml file for uploading to codacy.com. Source: about 5 years ago
Online analysisFinally, if you want a simple way to analyze your code without having to manually configure everything locally, you can use an online code review service such as Codacy (shameless plug here). We already integrate some of... - Source: dev.to / over 5 years ago
When comparing LeetCode and Codacy, 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.
Compare HackerRank to LeetCode or Codacy:

SonarQube, a core component of the Sonar solution, is an open source, self-managed tool that systematically helps developers and organizations deliver Clean Code.
Compare SonarQube to LeetCode or Codacy:

Project Euler is a series of challenging mathematical/computer programming problems that will...
Compare Project Euler to LeetCode or Codacy:

Code Climate provides automated code review for your apps, letting you fix quality and security issues before they hit production. We check every commit, branch and pull request for changes in quality and potential vulnerabilities.
Compare CodeClimate to LeetCode or Codacy:


Automated Code Review for GitHub & BitBucket
Compare CodeFactor.io to LeetCode or Codacy: