
LeetCode
Codechef
AlgoExpert.io
Project Euler
Coderbyte
Interview Cake
interviewing.io
Programming competitions and contests, programming community.

Pidgin
Adium
Telegram
Facebook Messenger
WhatsApp
Empathy
Jitsi
Trillian is a decentralized and federated instant messaging platform that lets your whole company send private and group messages, keep tabs on what co-workers are doing, share files, and much more.

Which is more popular?
Based on our record, CodeForces seems to be a lot more popular than Trillian. While we know about 82 links to CodeForces, we've tracked only 6 mentions of Trillian.
Website, pricing, platforms and company facts side by side.
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|---|---|---|
| Website | codeforces.com | trillian.im |
| 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
No analysis of Trillian yet.
Walkthroughs and reviews on video.
How to Start Competitive Programming on Codeforces? Virtual Contest? Div1? Div2? Div3? Rating Logic
More videos
Trillian 5 Review
How often each product is chosen within a category, 0–100% relative to the other.


Share your experience with using CodeForces and Trillian. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


Codeforces is a competitive programming platform that hosts coding contests and provides a platform for programmers to showcase their skills. It offers a wide range of programming challenges and problem-solving...
CodeForces is a collaborative platform where coders can participate in “rounds” where a time limit is set and points are distributed to the participants. CodeForces also has contests, problem sets as well as groups...
We have no reviews of Trillian yet. Be the first one to post
Recommendations tracked on public social media and blogs since March 2021.


Your preparation should not be random. Platforms like LeetCode, Codeforces, and GeeksforGeeks are tools—but what matters is how you use them. - Source: dev.to / 5 months ago
Most people who do competitive programming have moved to: . - Source: Hacker News / 9 months ago
At first, the problems on platforms like Codeforces felt overwhelming. But after a few rounds, I realized something important:. - Source: dev.to / about 1 year ago
Oh and make a list of anybody that says they have done an elaborate something similar with Excel (like me and at least one other person in this thread) and maybe have a discussion with them some time, we/they might have some useful... - Source: Hacker News / 12 months ago
I can’t believe trillian is still a thing. What a blast from the past. Thanks for that. Source: over 3 years ago
Yeah I think that was a long time ago. These days I think it's just another IM: https://trillian.im/. Source: over 3 years ago
When comparing CodeForces and Trillian, you can also consider the following products.

Practice and level up your development skills and prepare for technical interviews.
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Pidgin is an easy to use and free chat client used by millions. Connect to AIM, MSN, Yahoo, and more chat networks all at once.
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CodeChef is a not-for-profit educational initiative by Directi, an Indian software company. It is a global programming community that fosters learning and friendly competition, built on top of the world’s largest competitive programming platform.
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Adium is a free instant messaging application for Mac OS X that can connect to AIM, MSN, Jabber, Yahoo, and more.
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A better way to prep for tech interviews
Compare AlgoExpert.io to CodeForces or Trillian:

Telegram is a messaging app with a focus on speed and security. It’s superfast, simple and free.
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