
draw.io
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Dia is a GTK+ based diagram creation program for GNU/Linux, MacOS X, Unix, and Windows, and is released under the GPL license.

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.

Which is more popular?
Based on our record, HackerRank should be more popular than Dia. It has been mentioned 67 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | dia-installer.de | hackerrank.com |
| Company | Startup from Germany | — |
| 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
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.
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 Dia and HackerRank. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


UI of Dia is not the best in the world. The icons have very low resolution, it does not have support for screen resolutions higher than 1080p so that users of large and Ultra wide monitors could have problems.
Dia is a downloadable program that works with Windows and is a great way to make charts and diagrams just like with Visual Paradigm. The desktop tool provides different elements to make your chart more accurate. The...
Dia is a full-featured diagramming program which is licensed under GPL. It allows you to draw various types of diagrams and has special objects to help you to draw ER diagrams, UML diagrams, flowcharts, network...
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...
Recommendations tracked on public social media and blogs since March 2021.


First thing that come to my mind Dia Diagram Editor (http://dia-installer.de/). - Source: Hacker News / over 1 year ago
I used GIMP (https://www.gimp.org) and Dia Diagram Editor (http://dia-installer.de) I can't say I was very happy with either for what I was doing (laying out mount points for solar panels) FreeCAD (https://www.freecad.org) looks like a... Source: over 3 years ago
Perhaps the old Dia (works on W10). There's a portable version on Portableapps.com. Source: over 3 years ago
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
When comparing Dia and HackerRank, you can also consider the following products.


Practice and level up your development skills and prepare for technical interviews.
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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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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.
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CodeSignal is the leading assessment platform for technical hiring.
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