
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.

Slack
Mattermost
Microsoft Teams
Telegram
Asana
Rocket.Chat
RingCentral Video
A faster way for your team to communicate

Which is more popular?
Based on our record, HackerRank seems to be a lot more popular than Flock. While we know about 67 links to HackerRank, we've tracked only 2 mentions of Flock.
Website, pricing, platforms and company facts side by side.
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| Website | hackerrank.com | flock.com |
| Pricing | — | |
| Company | — | Startup from India · 100 - 249 employees · 2014 |
| 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
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
Small to medium-sized businesses, remote teams, startups, and organizations looking for a cost-effective communication and collaboration solution, particularly those who appreciate a simple and clean user interface.
Walkthroughs and reviews on video.
Is HackerRank A Good Idea?
More videos
Flock Review - with Tom Vasel
More videos
How often each product is chosen within a category, 0–100% relative to the other.


Share your experience with using HackerRank and Flock. 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...
Flock is a Telegram alternative that looks a lot like a basic Slack or Discord; it organizes group discussions as a forum. It does, however, also include messaging and calling features: voice + video calling between...
Flock is a cloud based tool which is an alternative option for Telegram and it is widely used in Business or corporate conversations by offering video, audio calling with proper screen sharing facility, and it can be...
Flock channels streamline team communication, eliminate clutter and make it easy to stay on track. Enhanced video conferencing features allow you to share your screen from any device, and teams can share files...
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
Flock.com — A faster way for your team to communicate. Free Unlimited Messages, Channels, Users, Apps & Integrations. - Source: dev.to / about 5 years ago
He's coming with years of experience of having architected systems at Uber, Flock, Sumo Logic and was a founding engineer who helped design the cryptography primitives at Zeta. Someone of his caliber coming onboard means that we'll be... Source: about 5 years ago
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