
HackerRank
CodeSignal
iMocha
TestGorilla
HackerEarth
DevSkiller
mettl
Codility provides a SaaS platform with advanced validation, security and protection features to evaluate the skills of software engineers.

DockDoor
uBar
ActiveDock
DockFix
cDock
CoolDock
Rectangle
Live window previews, a real switcher, window snapping, and a Dock you can shape into almost anything. A native Dock replacement for macOS.

Which is more popular?
Based on our record, Codility seems to be more popular. It has been mentioned 2 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | codility.com | dockapp.app |
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| Platforms | ||
| Company | — | Startup from the United States · 1 - 9 employees · 2026 |
| 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....
DockApp is a native replacement for the macOS Dock — a whole suite of Mac utilities in one app. Hover any icon to see its open windows full-size and live, and pick one without leaving the Dock. Flip through every window across every app with a real ⌘Tab switcher. Snap windows to halves, thirds,...
What each product offers, as listed by its team.


Possible disadvantages
Walkthroughs and reviews on video.
An Introduction to Codility: The Tech Hiring Platform for Engineering Teams
No DockApp 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.


As answered by people managing Codility and DockApp.
DockApp's answer:
Built for macOS on macOS
DockApp's answer:
DockApp combines a customizable Dock replacement, live window previews on hover, a real window switcher, and window snapping with saved layouts — in one native, notarized app with no SIP hacks and no tracking. It does what three or four single-purpose utilities do, for a one-time price.
DockApp's answer:
One app does what three or four single-purpose tools do — and they actually work together — for a one-time price, not a subscription. It's native and notarized (no SIP disabling, no injection), fully private (no accounts, no tracking), runs on up to 3 Macs, and comes with a 14-day no-questions refund.
DockApp's answer:
Mac power users — developers, designers, writers and multi-monitor multitaskers — who already use window managers or Dock tweaks and prefer native, private, one-time-purchase apps over subscriptions. macOS 26, Apple silicon.
DockApp's answer:
The Mac Dock launches apps and not much else, so I was juggling separate tools for window previews, switching, snapping and restyling — none aware of each other. I built DockApp to do all of it in one native app, on public APIs only, with nothing to disable and nothing leaving your Mac. It's one of SKJ APPS, a small family of Mac utilities I build and support solo.
Share your experience with using Codility and DockApp. 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.
We have no reviews of DockApp yet. Be the first one to post
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
Tracking DockApp since Aug 2026.
When comparing Codility and DockApp, 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 DockApp:

Window peeking and alt-tab functionality for macOS
Compare DockDoor to Codility or DockApp:

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


Application Launcher, improved Dock for macOS, alternative to Apple Dock, uBar, HyperDock
Compare ActiveDock to Codility or DockApp: