
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.

Honey
Slickdeals.net
DealNews
CouponFollow Cently
Dealspotr
RetailMenot
Woot
The fact-checker for online deals. WhatNotSell verifies whether a discount is actually real, scores every deal 0–100, and shows the average discount for any category — so you never overpay.

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 | whatnotsell.com |
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| Company | — | Startup from the United States · 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....
WhatNotSell is an AI-powered shopping intelligence platform that helps consumers discover, compare, and evaluate the best deals across trusted retailers. Every deal is verified against its real original price and scored 0–100 based on discount depth, merchant trust, price history, and community...
What each product offers, as listed by its team.


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
No WhatNotSell 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 WhatNotSell.
WhatNotSell's answer:
Deal hunters and smart shoppers who are tired of fake discounts and want a single trusted place to find genuinely good deals. Secondary: content creators and businesses who need structured deal data via our API plans.
WhatNotSell's answer:
Every deal gets an AI score from 0–100 based on discount depth, price, retailer trust, and community votes — so instead of scrolling through hundreds of listings, you instantly see which deals are genuinely worth it. We combine 9,500+ deals across 36 categories with 100 expert buying guides, so you can research what to buy and find the best price in one place.
WhatNotSell's answer:
Traditional deal sites either rely on community voting alone (slow to surface deals) or pure editorial curation (limited volume). WhatNotSell uses AI scoring to evaluate every deal automatically at scale, filtering out fake discounts and inflated "original prices" that plague deal aggregators. Plus, plain-English price alerts and a free forever plan — no extension installs, no data selling.
WhatNotSell's answer:
WhatNotSell started from a simple frustration: deal sites are full of noise — inflated original prices, expired links, and "deals" that aren't deals. We built an AI scoring engine that evaluates every deal objectively, then layered in expert buying guides and price alerts. The goal: tell you what's actually worth buying, and what's not — hence the name.
WhatNotSell's answer:
Next.js, TypeScript, Tailwind CSS, Supabase (PostgreSQL), and Vercel, with AI-powered deal scoring and categorization.
WhatNotSell's answer:
WhatNotSell is a free consumer platform, so our "customers" are everyday shoppers rather than enterprise clients. We're an early-stage product growing our user base, focused on helping individual shoppers verify deals and avoid overpaying.
Share your experience with using Codility and WhatNotSell. 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 WhatNotSell 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 WhatNotSell since Jun 2026.
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DealNews is called to be the universe of sales because of featuring thousands of products in all ranges and categories from home to office products.
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