My <canvas>-based, Photoshop-esque JavaScript color picker
My <canvas>-based, Photoshop-esque JavaScript color picker launched on August 26, 2010 with 73 votes and more than 90% of that year's launches. The site was still online in September 2026, 16 years on.
In plain words
The Arithmetic Game is a timed speed drill that challenges users to solve as many arithmetic problems as possible within two minutes. Designed for anyone looking to practice mental math quickly, it offers fast-paced problem-solving in a straightforward format. The game focuses on rapid calculation drills without additional complications.
written from the facts on this page · September 2026
From the sources
The Arithmetic Game is a fast-paced speed drill where you are given two minutes to solve as many arithmetic problems as youfrom zetamac.com
Does a similar job
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I made a web game that makes practicing basic arithmetic fun2024 · worchle.com · ▲161Hey, maker here. After launching a daily word search game, I randomly thought of this math game while driving. Finally got around to making it and I think it turned out pretty cool. It’s a math search game that’s meant to help you practice your quick addition, subtraction, multiplication, and division skills. I’m hoping it’ll help people (even those like me who aren’t big on math) learn and increase their speeds. (There are also some settings you can enable to make the game harder) If you try it out, please let me know if you found it fun, if you have anything you’d like me to add, or if you…

- MAMath Attack – My side project of 3 years2017 · play.google.com · ▲292
I made an interactive math crossword puzzle with infinite levels2024 · scientific.place · ▲165Hey there! I'm the brains behind the math crossword game on my site. This game is all about making math a little more fun – users just drag and drop numbers to fill in the blanks and move on to the next level if they get it right. Let me know if face any issues or have any suggestions! :)


More life & fun this month
the category →
A free city-building game in your browser. You are the mayor. You know what the city needs. Now get it past the zoning board, the neighbors, the appeals court and the next election.
Life & fun · 21h ago · permit.petercai.com
- IV
Life & fun · 13d ago · tanzaniaeducationproject.org

Turn a phone, tablet or TV into a sign. Type a message and it fills the screen: welcome signs, timers, Wi-Fi passwords and more. No app, no account, free.
Life & fun · 14d ago · bigwords.page

Play a free virtual guitar online with your keyboard or by touch. Slow songs down and see every chord, string and strum. Acoustic, classic, electric and bass.
Life & fun · 8d ago · guitoro.com

Carrier settings from iPhone, Pixel and Galaxy firmware, decoded and compared: APNs, VoLTE, 5G and Wi-Fi Calling per carrier, and what each build changed.
Life & fun · 12d ago · carrierexplode.com

Life & fun · 22d ago · space.bl2.net
Source: Show HN post ↗
Launched alongside, August 2010
the whole month →
Hi guys, yesterday I launched a new book notification service called 'Any new books?': http://anynewbooks.com The idea is that you enter your email, subscribe to a few categories of your interest, and then you'll receive one weekly email per category with a list of new interesting books that were just released. The first day was pretty good I think, with many people signing up. Among these, I've already spotted a few key players in our industry (which I take to be a positive sign, of course) and the feedback I've been receiving by email has been very positive so far. I'm posting this here…
Life & fun · 2010 · anynewbooks.com
- PT
Someone suggested the Pomodoro-technique on HN and I quickly threw together this page that is supposed to help me try Pomodoro out today. Join my effort today and let me know if you like it!
Life & fun · 2010 · musetheory.de
- V4
Hey guys, Just finished up hacking on my submission for the Wufoo API contest. VoiceForms 4000 takes any existing Wufoo form and turns it into a phone survey. The app is written in Python, runs on App Engine, and uses Twilio for all the phone magic. https://voiceforms4000.appspot.com/ Go ahead and fill one of the sample forms and tell me what you think. Enjoy.
Dev tools · 2010 · voiceforms4000.appspot.com
- IT
Last week I showed prldr.com, a small project I created during my weekends. The immediate thing I learned from the comments was that prldr had to be a RSS reader, which I already had in mind. So after another couple of days programming prldr.com is now a visual rss reader. You read the news by just opening the links from the RSS feeds, simple as that. features for now: management of feeds, import OPML file, keyboard navigation, automatic feed fetching. ps: I disabled preloading of tabs, because some browsers tend to crash when opening 30 iframes :P. Have to implement some stack mechanism to…
Work · 2010
- MS
Transform your photo into a stunning custom painting. 100% hand-painted on canvas. Choose from talented artists. Upload a photo, and receive a painting masterpiece in 7-10 days!
Life & fun · 2010 · like.fm
- TR
I decided to cut all the other features and just release the startup I have been working on for the last few months. http://seekier.com I hate to put it like this, but look at it as a twitter for sharing what you search. Seekier lets you see what others are searching, allows you to share your own searches, and discover more through discussion. Please let me know what you think of the idea and concept. There may be bugs because I decided to just release it. Thanks! If you decide to register, be great if you posted your profile.
Life & fun · 2010 · seekier.com