
HackerRank
CodeSignal
iMocha
HackerEarth
TestGorilla
DevSkiller
mettl
Codility provides a SaaS platform with advanced validation, security and protection features to evaluate the skills of software engineers.
GrapheneOS
LineageOS
Android
e.foundation /e/
postmarketOS
Ubuntu Touch
DivestOS
Privacy-focused operating system for smartphones based on Android and microG

Which is more popular?
Based on our record, CalyxOS seems to be a lot more popular than Codility. While we know about 191 links to CalyxOS, we've tracked only 2 mentions of Codility.
Website, pricing, platforms and company facts side by side.
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CalyxOS
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| Website | codility.com | calyxos.org |
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| Listed in |
In their own words, as submitted to SaaSHub.

The Codility platform includes: CodeCheck - Design role-specific remote skills assessments to screen your technical candidates before moving them to the interview stage. CodeLive - Host technical remote or onsite interviews via our shared editor using a range of templates and whiteboards....
No description of CalyxOS yet.
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.

No analysis of Codility yet.
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
An Introduction to Codility: The Tech Hiring Platform for Engineering Teams
CalyxOS Review: The Private & Secure Android ROM For Everyone!
More videos
How often each product is chosen within a category, 0–100% relative to the other.

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

Codility is a platform that helps companies assess the coding skills of developers. They offer a range of online coding tests and assessments that enable employers to evaluate candidates' technical abilities.
It ships with Signal for encrypted messaging; Tor browser to access the web without any tracking; a free and trusted VPN from the Calyx Institute; the open-source Aurora Store, a Play Store alternative, and more....
Recommendations tracked on public social media and blogs since March 2021.

- Technical skills: have they got the walk to match the talk? Programming languages on a resume mean little if candidates are unable to demonstrate their hard coding skills. You can test these skills with technical skill tests, such as... - Source: dev.to / over 2 years ago
Codility : Verify and improve coding skills. - Source: dev.to / over 5 years ago
I use pixel 3 with https://calyxos.org/ as a home phone to play music, record videos, pictures etc. Calyxos is still providing extended support for 4a, but microG doesn't work as well compared to sandboxed google play services on... - Source: Hacker News / over 1 year ago
For example https://androidauthority.com/grapheneos-3287030/ > "Even if you stomach the Pixel-only requirement" I have not and will not stomach that at all, nope! https://grapheneos.org/faq#supported-devices Nope! I wasn't paying... - Source: Hacker News / over 2 years ago
I'm sure you did your research. I'm writing for other readers who are interested. There are a few alternatives, more can be found but this is a selection of the most prominent offerings. /e/OS: https://e.foundation/e-os/ GrapheneOS:... - Source: Hacker News / almost 3 years ago
When comparing Codility and CalyxOS, you can also consider the following products.

HackerRank is a platform that allows companies to conduct interviews remotely to hire developers and for technical assessment purposes.
Compare HackerRank to Codility or CalyxOS:

GrapheneOS is an open source privacy and security focused mobile OS with Android app compatibility.
Compare GrapheneOS to Codility or CalyxOS:

CodeSignal is the leading assessment platform for technical hiring.
Compare CodeSignal to Codility or CalyxOS:

Operating system for smartphones and tablet computers, based on the Android
Compare LineageOS to Codility or CalyxOS:


Android is an open source mobile operating system initially released by Google in 2008 and has since become of the most widely used operating systems on any platform.
Compare Android to Codility or CalyxOS: