
Project Euler
LeetCode
Exercism
Codewars
HackerRank
CodeCombat
CodeForces
CodeSignal
Rybbon
Tango Card
Tremendous
Giftbit
Hawk Incentives
Swift Prepaid Solutions
eGifter
Gyft
Project Euler
RybbonBased on our record, Project Euler seems to be a lot more popular than Rybbon. While we know about 415 links to Project Euler, we've tracked only 1 mention of Rybbon. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
Let's hope this is going to help me solve some more Project Euler [1] problems! [1] https://projecteuler.net/. - Source: Hacker News / about 2 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 / 5 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 competition just a tiny reward. - Source: Hacker News / 7 months ago
I do hobby programing. It is sometimes to create something (supposedly) useful. Lately though it is more discovery and a little math like. I enjoy Project Euler (https://projecteuler.net/. Recently I have been playing with superpermutations (https://projecteuler.net/) and pencil and paper is useful but filling lots of paper with lots of numbers is not that fun. - Source: Hacker News / over 1 year ago
As pointed out in a sibling comment, it appears that quote only shows up if you're logged in, but assuming you have an account and are logged in, it's on the homepage (https://projecteuler.net/), second paragraph under the following heading: > I learned so much solving problem XXX, so is it okay to publish my solution elsewhere? > It appears that you have answered your own question. There is nothing quite like... - Source: Hacker News / over 1 year ago
Http://rybbon.net/ is a gift card processor for companies. Allows them to send out gift cards to a lot of people at once. Source: about 3 years ago
LeetCode - Practice and level up your development skills and prepare for technical interviews.
Tango Card - Tango Card bundles an awesome catalog of e-gift cards and other e-rewards with easy-to-use technology and expert program support.
Exercism - Download and solve practice problems in over 30 different languages.
Tremendous - Tremendous is a customer and employee loyalty platform that allows companies to reward their customers for surveys promotions and referrals.
Codewars - Achieve code mastery through challenge.
Giftbit - Buy, send and track digital gift cards for your reward and incentive programs.