
Codecademy
Exercism
Treehouse
edX
LeetCode
Coursera
Pantheon
Achieve code mastery through challenge.

SpiderOak
Duplicati
rsync
Online Vault Backup
Seafile
Rebel Backup
Mega
Duplicity backs directories by producing encrypted tar-format volumes and uploading them to a remote or local file server.
Which is more popular?
Based on our record, Codewars seems to be a lot more popular than Duplicity. While we know about 160 links to Codewars, we've tracked only 12 mentions of Duplicity.
Website, pricing, platforms and company facts side by side.
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|---|---|---|
| Website | codewars.com | duplicity.gitlab.io |
| 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
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.
Overall verdict
Why this product is good
Recommended for
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 Codewars and Duplicity. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


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...
Duplicity is a free open source, secure and bandwidth-efficient backup tool based on rsync. It creates encrypted backups of directories in tar-format archives and backs them on the local or remote machine over SSH....
Recommendations tracked on public social media and blogs since March 2021.


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
Other popular choices include borg, duplicity, and duplicati. After evaluating these and others mentioned in the comments, I ended up using borg with borgmatic to define homelab backups with yaml files that are version controlled in... - Source: Hacker News / almost 2 years ago
Overbuilt and OTT? Sure... But this works fantastically for my use case. I have current backups of everything except my media library because of the size of it; my VM's are all backed up to my Synology nightly using Backy2, my... Source: over 3 years ago
There are some backup tools in this thread. Duplicati, rsync, restic, Duplicity, Syncthing. Source: over 3 years ago
When comparing Codewars and Duplicity, you can also consider the following products.

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.
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SpiderOak makes it possible for you to privately store, sync, share & access your data from everywhere.
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Download and solve practice problems in over 30 different languages.
Compare Exercism to Codewars or Duplicity:

Free backup software to store backups online with strong encryption. Works with FTP, SSH, WebDAV, OneDrive, Amazon S3, Google Drive and many others.
Compare Duplicati to Codewars or Duplicity:

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

rsync is a file transfer program for Unix systems. rsync uses the "rsync algorithm" which provides a very fast method for bringing remote files into sync.
Compare rsync to Codewars or Duplicity: