
LeetCode
Codility
CodeSignal
iMocha
HackerEarth
Codewars
TestGorilla
HackerRank is a platform that allows companies to conduct interviews remotely to hire developers and for technical assessment purposes.

Houseparty
Squad
Tribe
Airtime
Booyah
Skype
Google Duo
Achieve your strategic goals with OKRs, 1:1s, and Serendly AI.

Which is more popular?
Based on our record, HackerRank seems to be more popular. It has been mentioned 67 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | hackerrank.com | serendly.com |
| Pricing | — | |
| Platforms | — | |
| Company | — | Startup from France · 1 - 9 employees · 2024 |
| Listed in |
In their own words, as submitted to SaaSHub.


No description of HackerRank yet.
Serendly is an OKR software and 1:1 meeting tool designed to improve strategic execution in startups and SMBs. Unlike most OKR platforms that focus mainly on tracking objectives and key results, Serendly connects OKRs with the day-to-day management layer where execution actually happens: weekly...
What each product offers, as listed by its team.


Possible disadvantages
An editorial look at what each product does well and who it suits.


Overall verdict
Why this product is good
Recommended for
HackerRank is recommended for students, individual learners, and job seekers looking to improve their coding skills, as well as for companies seeking an efficient way to evaluate candidates' technical abilities during the hiring process.
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.


As answered by people managing HackerRank and Serendly.
Serendly's answer:
Serendly differs from traditional OKR tools by covering the full execution loop from planning and alignment to daily execution, rituals, and real-time steering. It connects OKRs to 1:1s, tasks, and AI-driven insights so teams continuously act on priorities, surface risks early, and actually achieve their strategic objectives.
Serendly's answer:
Most OKR tools focus on tracking goals, but Serendly focuses on making them actually happen. It connects OKRs with weekly 1:1s and uses AI to turn managerial conversations into continuous execution and alignment.
Serendly's answer:
Serendly is designed for startups and SMBs (~20 to 400 employees) that use OKRs to drive strategy but lack a dedicated OKR or strategy operations lead to ensure consistent execution. It is particularly valuable for CEOs and founders who want a clear, real-time view of company trajectory at a glance. It is also built for executives (VPs, Heads of…) who need to align their team’s priorities with the rest of the organization and ensure cross-functional execution without friction.
Share your experience with using HackerRank and Serendly. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


What are LeetCode and LeetCode alternatives good for?LeetCode💡Interested in leveling up your career? Apply to the Formation Fellowship...
HackerRank’s challenges cover a wide range of topics and difficulty levels, allowing developers to enhance their problem-solving skills and learn new algorithms and data structures. The competitive nature of...
HackerRank offers a wide array of challenges across various domains such as algorithms, mathematics, SQL, and functional programming. Its interface is user-friendly, and the platform provides detailed feedback on...
We have no reviews of Serendly yet. Be the first one to post
Recommendations tracked on public social media and blogs since March 2021.


This way, you transfer what you already know (problem-solving) but only change the syntax. Platforms like Hackerrank are also great to solve the same problem in different languages and learn from other people’s solutions. - Source: dev.to / about 1 year ago
Firstly, solve some common data structure problems with it. Implement some data structures like arrays, linked lists, stacks, queues, etc. You can check common problems on LeetCode, Hackerank or some other resources. - Source: dev.to / over 2 years ago
I don't have a consecutive internet connection and I can't keep up learning process so I started practicing in hackerrank.com I have started some challenges in python and c++ there. Thus I have no internet connection so I cannot practice... Source: almost 3 years ago
Tracking Serendly since Mar 2021.
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