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

LucidChart
PlantUML
draw.io
Mermaid Chart
Excalidraw
Diagramly.ai
Miro
Create diagrams and visualizations using text and code.

Which is more popular?
HackerRank might be a bit more popular than Mermaid. We know about 67 links to it since March 2021 and only 62 links to Mermaid.
Website, pricing, platforms and company facts side by side.
|
|
|
|
|---|---|---|
| Website | hackerrank.com | mermaid.js.org |
| Pricing | — | |
| 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 Mermaid yet.
Walkthroughs and reviews on video.
Is HackerRank A Good Idea?
More videos
The Little Mermaid Paid Reviews Are In!
More videos
How often each product is chosen within a category, 0–100% relative to the other.


Share your experience with using HackerRank and Mermaid. 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...
Like PlantUML, Mermaid follows the diagrams-as-code model. It is supported by GitHub and uses Markdown-style notation to create and modify diagrams. This makes diagramming with Mermaid very convenient if you're...
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
Seems a bit more like https://mermaid.js.org use cases! - Source: Hacker News / 3 months ago
I wanted authors on my Forem instance to write flowcharts and sequence diagrams using Mermaid syntax directly in their articles, like this:. - Source: dev.to / 4 months ago
Credits: - label: Cover image text: Kelly Sikkema on Unsplash url: https://unsplash.com/@kellysikkema - label: Diagram library text: Mermaid url: https://mermaid.js.org/. - Source: dev.to / 5 months ago
When comparing HackerRank and Mermaid, you can also consider the following products.

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

LucidChart is the missing link in online productivity suites. LucidChart allows users to create, collaborate on, and publish attractive flowcharts and other diagrams from a web browser.
Compare LucidChart to HackerRank or Mermaid:

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

PlantUML is an open-source tool that uses simple textual descriptions to draw UML diagrams.
Compare PlantUML to HackerRank or Mermaid:

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