
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.

MailChimp
Constant Contact
Brevo
Campaign Monitor
AWeber
Robly
Salesforce Email Studio
GMass allows you to easily schedule emails, send out mass emails and mail merge campaigns and more with Gmail! Click here to learn about more features!

Which is more popular?
Based on our record, HackerRank should be more popular than GMass. 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 | gmass.co |
| Pricing | — | |
| Company | — | Startup from the United States |
| 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
GMass is recommended for individuals, small businesses, and startups who primarily use Gmail and are looking for a straightforward, cost-effective way to manage email campaigns. It is excellent for those who need to send personalized emails, automate follow-ups, and track basic metrics without extensive setup or learning curves.
Walkthroughs and reviews on video.
Is HackerRank A Good Idea?
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GMass Review and Tutorial: How To Send Thousands of Emails in Minutes
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How often each product is chosen within a category, 0–100% relative to the other.


Share your experience with using HackerRank and GMass. 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...
GMass is a mail merge tool designed for mass email campaigns directly from your Gmail inbox. With advanced features like automated follow-ups, segmentation, and A/B testing, GMass enables users to manage and optimize...
Gmass is a powerful mail merge and follow-up email service for Gmail. Connect to Google Sheets to send personalized mass emails; send emails to selected recipients as new messages or replies; schedule emails, track...
GMass is an email marketing warm up software based around Google’s Gmail services.it’s an Open source email warmup, where you can enjoy all exciting and useful tools for free.GMass is an all-in-one Gmail solution,...
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
If you have Gmail or Gsuite, try GMass - gmass.co. Cheap, easy, and uses your email address, so not spam filtering. Source: over 3 years ago
I did some tests today at gmass.co using my [xxx@pm.me](mailto:xxx@pm.me) email address and any of the many @pm.me emails I use go directly to the Primary Inbox on the tests. Whenever I use one of my authorized domains, even sending it... Source: over 3 years ago
You can use gmass.co to achieve this with gmail You can use inboxpirates to check how it looks on different email clients. Source: about 4 years ago
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