Note: I used to have limited versions of my apps on this site to prevent the potential for code-injection attacks/abuse, but I've since removed those safety restrictions: that means only use permalinks you made yourself or by someone you trust. Apps require recent versions of Chrome, Firefox, or Safari.
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Evaluate a 2-input function and see its behavior at a glance.
View wireframe surfaces for all the functions given. Rotate the view moving your pointer/finger.
See all major cities of the Americas fade into view except for Alaska, which literally didn't make the “cut”.
A tiny app which periodically reminds you to take a break.
Make a calendar showing the current month and the next few ahead. This app lets you keep notes for each day via bookmarkable permalinks, using the top-right link.
Simulate slow-moving clouds.
Convert multiple units at the same time.
An earthquake-like experience
Inspect composite datasets. Supports CSV, TSV/TAB/TXT, and JSON file formats.
Evaluate and compare multiple functions at the same time.
Evaluate many JS expressions on consecutive numbers. Using permalinks, you can make your own custom calculators to go back to. (Example temperature converter)
Screenshots from my topic-specific map collection
See what the Law of Large Numbers means with an animated interactive histogram.
Watch the Lorenz butterfly being traced out in real time.
See all major cities from around the world, and read some info about them.
Reveal the famous Mandelbrot set.
Make your own memes. Right-click on your creation to see a menu which lets you save it.
Match pairs of animated characters.
Play a distraction-free Minesweeper game.
Notebooks also let you include arbitrary HTML and come with extra libraries I made to help with various tasks, such as display information, crunch numbers, and manipulate data in various forms.
See results of multiple random walks as a panel of sparklines.
Live-edit WebGL fragment shaders.
Relax and watch snow fall.
The only music player you'll ever need. Plays your playlists in a never-ending shuffle mode. Also has a search-to-play autocomplete bar.
Show historical timelines. Top title and bottom data table are both editable.
Use permalink to have a bookmarkable link of your work at any time. Some examples are
See the current time for multiple places around the world. It updates every minute.
Click on places to show their local time and use the permalink to bookmark your picks (example) at any time.
Mix multiple sine waves and watch your ears!
Layout geocoded data tables over a map of the world. Hover on bubbles to have all data from the row they came from show up.
See the world's biggest cities at a glance; there's no interactivity, unlike most of my other map displays.
View a summary of what multiple YouTube channels have been up to lately. Links lead to videos or a channel's complete video list.