
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.

Claude Code
GitHub Copilot
Cursor
OpenClaw
VS Code
Claude for Desktop
opencode
Codex is a VS Code extension that allows any engineer to attach comments, questions or any kind of content to specific lines of code.
Which is more popular?
Based on our record, HackerRank seems to be a lot more popular than Codex. While we know about 67 links to HackerRank, we've tracked only 1 mention of Codex.
Website, pricing, platforms and company facts side by side.
|
|
|
|
|---|---|---|
| Website | hackerrank.com | usecodex.com |
| Listed in |
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.
No analysis of Codex yet.
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 Codex. 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 Codex 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
Our company, Codex, is live on Product Hunt now and we'd love your support via an upvote! - Source: dev.to / about 4 years ago
When comparing HackerRank and Codex, you can also consider the following products.

Practice and level up your development skills and prepare for technical interviews.
Compare LeetCode to HackerRank or Codex:

Transform hours of debugging into seconds with a single command. Experience coding at thought-speed with Claude's AI that understands your entire codebase—no more context switching, just breakthrough results.
Compare Claude Code to HackerRank or Codex:

Codility provides a SaaS platform with advanced validation, security and protection features to evaluate the skills of software engineers.
Compare Codility to HackerRank or Codex:

Your AI pair programmer. With GitHub Copilot, get suggestions for whole lines or entire functions right inside your editor.
Compare GitHub Copilot to HackerRank or Codex:

CodeSignal is the leading assessment platform for technical hiring.
Compare CodeSignal to HackerRank or Codex:

The AI-first Code Editor. Build software faster in an editor designed for pair-programming with AI.
Compare Cursor to HackerRank or Codex: