
Bitly
YOURLS
TinyURL
Rebrandly
Cutt.ly
Lstu
adf.ly
An open source URL shortener. A great non-profit and free alternative to bit.ly, TinyURL, or goo.gl.

Codecademy
Exercism
Treehouse
edX
LeetCode
Coursera
Pantheon
Achieve code mastery through challenge.
Which is more popular?
Based on our record, Codewars seems to be a lot more popular than Polr. While we know about 160 links to Codewars, we've tracked only 2 mentions of Polr.
Website, pricing, platforms and company facts side by side.
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| Website | polrproject.org | codewars.com |
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| 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
Polr is recommended for developers, tech-savvy users, small businesses, and privacy-conscious individuals who need a customizable URL shortening service with the ability to host their own instance and have control over their data and URLs.
Overall verdict
Why this product is good
Recommended for
Codewars is recommended for beginner to advanced programmers who enjoy learning through practice and are interested in improving their algorithmic thinking and coding skills in a gamified environment. It is particularly beneficial for those preparing for coding interviews or seeking to reinforce their programming knowledge in a fun and interactive way.
Walkthroughs and reviews on video.
No Polr videos yet. You could help us improve this page by suggesting one.
How often each product is chosen within a category, 0–100% relative to the other.


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


Since Polr is open-source, it is entirely free to use and self-host. However, you will need some technical knowledge to set up and maintain your own URL shortener using Polr. Alternatively, you can opt for their...
More than anything, Polr is free and an excellent choice for those who master technical knowledge. Before committing to this platform, you can check out its robust demo page. Once you create an account, you can manage...
Polr is an open-source project that allows people with the technical know-how to host their own URL shortener. It's available through the Polr project page and from GitHub. You can use the tool as-is or fork it if you...
Edabit offers a learning experience similar to learning a new language, focusing on smaller and more frequent exercises that build proficiency over time. Like Codewars, Edabit provides many challenges that increase in...
In conclusion, while Leetcode remains a valuable resource for coders, the platforms listed above offer varied approaches to learning and improving coding skills. Whether you're drawn to the gamified learning...
This LeetCode alternative has excellent features for anyone looking to sharpen their coding skills. Codewars uses kata, which are small coding exercises that are community developed to help you master your language of...
Recommendations tracked on public social media and blogs since March 2021.


That said, setting up a URL shortener to forward HTTP requests it pretty trivial. There are open source projects that already exist for this purpose. For example, https://polrproject.org/. Source: about 3 years ago
This is one of the trending angular project for beginners. In this application, the main feature will be the input for the link you’d like to shorten and the result’s output space. You can check the Polr for example. It is an open-source... - Source: dev.to / almost 5 years ago
Recently, I was working on a coding kata on codewars.com. Early on, I started thinking that a potential solution might utilize recursion, a concept that involves a function calling itself. However, I quickly realized that my grasp of... - Source: dev.to / almost 3 years ago
Get more involved. Look into internships and junior SWE positions to get a sample of what you'd be applying for once you graduate. Solve coding challenges, start working on a portfolio of your personal works. I recommend codewars.com for... Source: almost 3 years ago
I'd recommend to play around with some basic coding challenges on leetcode.com or codewars.com. If the course prepared you well you won't find this useful, but playing around with them will make sure that you are comfortable with basics... Source: about 3 years ago
When comparing Polr and Codewars, you can also consider the following products.

Get the most out of your social and online marketing efforts. Own, understand and activate your best audience through the power of the link with Bitly Enterprise.
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Learn the technical skills you need for the job you want. As leaders in online education and learning to code, we’ve taught over 45 million people using a tested curriculum and an interactive learning environment.
Compare Codecademy to Polr or Codewars:

YOURLS is a website that contains all the tools you need to create and launch your very own URL shortener. URL shorteners like bitly or TinyURL are fine for public use, but they offer limited options in terms of URL customization.
Compare YOURLS to Polr or Codewars:

Download and solve practice problems in over 30 different languages.
Compare Exercism to Polr or Codewars:

The first notable URL shortener, online since 2002. Branded short links on your own domain, with click analytics that count human and bot traffic separately, QR codes, editable destinations, bulk creation and a REST API.
Compare TinyURL to Polr or Codewars:

Treehouse is an award-winning online platform that teaches people how to code.
Compare Treehouse to Polr or Codewars: