
LeetCode
Exercism
Codewars
HackerRank
CodeSignal
CodinGame
CodeCombat
Project Euler is a series of challenging mathematical/computer programming problems that will...

Paper Website
figshare
Zenodo
Journal Together
ORCHID
ManuscriptReport
Crosspost
Prove you created your research before anyone else. Register academic papers with immutable timestamps. Trusted by students, researchers and institutions.

Which is more popular?
Based on our record, Project Euler seems to be more popular. It has been mentioned 415 times since March 2021.
Website, pricing, platforms and company facts side by side.
|
|
|
|
|---|---|---|
| Website | projecteuler.net | publishpapers.online |
| Pricing | ||
| Platforms | — | |
| Company | — | Startup from Nigeria · 1 - 9 employees · 2025 |
| Listed in |
In their own words, as submitted to SaaSHub.


No description of Project Euler yet.
PublishPapers lets students and researchers create permanent, blockchain-verified proof of authorship for projects, theses and early research before formal publication. Privacy-controlled, verifiable forever and accessible without peer review or journals.
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
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
Project Euler Challenges 1–4 - Coding Challenges with Florin
More videos
PublishPapers Demo
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing Project Euler and PublishPapers.online.
PublishPapers.online's answer:
PublishPapers lets students and researchers create permanent, blockchain-verified proof of authorship for projects, theses and early research before formal publication. Privacy-controlled, verifiable forever and accessible without peer review or journals.
PublishPapers.online's answer:
PublishPapers isn’t a journal, publisher or peer review platform. Unlike competitors, it provides a simple, blockchain-verified timestamp of authorship that is permanent, publicly verifiable and fully privacy controlled. Students and researchers can prove when their work existed before publication or disputes arise without relying on institutions or intermediaries.
PublishPapers.online's answer:
Final-year students, postgraduates and early researchers who want verifiable proof of their projects or research work before publication. Also relevant for lecturers and institutions supporting academic integrity and IP protection.
PublishPapers.online's answer:
PublishPapers was born from firsthand experience with final year projects and early-stage research. Many ideas get lost, disputed or reused because there’s no simple, verifiable way to prove when the work existed. We built PublishPapers to give students and researchers permanent, blockchain-backed proof of authorship and timing, no peer review, no publication required, just immutable proof that protects their intellectual contribution.
PublishPapers.online's answer:
PublishPapers uses blockchain for immutable timestamps, a decentralized file storage, web3 crypto payments and a modern web stack. This ensures secure, verifiable proof of authorship for research and student projects.
PublishPapers.online's answer:
Final year university students across Nigeria and other regions. Postgraduate students working on theses or research proposals. Research assistants and lab members in universities. Tech-savvy class representatives or student leaders. Student organizations and research clubs exploring academic integrity solutions. Supervisors or lecturers who want to timestamp and verify student work.
Share your experience with using Project Euler and PublishPapers.online. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


Project Euler provides a large collection of challenges in the domain of computer science and mathematics. The challenges typically involve writing a small program to figure out the solution to a clever mathematical...
If you are studying algorithms and computer programming, chances are you’ve heard of Project Euler. A collection of mathematical problems made for problem solvers who are interested to combine mathematics and...
Top notch and very much needed solution for Academias
Recommendations tracked on public social media and blogs since March 2021.


Let's hope this is going to help me solve some more Project Euler [1] problems! [1] https://projecteuler.net/. - Source: Hacker News / 4 months ago
Https://projecteuler.net/ for "Thinker" brain food. (it still has the issue of not being a pragmatic use of time, but there are plenty interesting enough questions which it at least helps). - Source: Hacker News / 7 months ago
I have a Project Euler (https://projecteuler.net/) account. Though I do not register at all on the leader board I will sometimes work obsessively on a problem just to make one of the level icons light up for me. There is not really... - Source: Hacker News / 9 months ago
Tracking PublishPapers.online since Jan 2026.
When comparing Project Euler and PublishPapers.online, you can also consider the following products.

Practice and level up your development skills and prepare for technical interviews.
Compare LeetCode to Project Euler or PublishPapers.online:

No tech. No distractions. Pure Creativity. Publish your ideas to millions just using pen & paper.
Compare Paper Website to Project Euler or PublishPapers.online:

Download and solve practice problems in over 30 different languages.
Compare Exercism to Project Euler or PublishPapers.online:

Securely store and manage your research outputs in the cloud, or make them openly available and citable.
Compare figshare to Project Euler or PublishPapers.online:

Achieve code mastery through challenge.
Compare Codewars to Project Euler or PublishPapers.online:

Network & Admin and Remote Work & Education
Compare Zenodo to Project Euler or PublishPapers.online: