zxcvbn Demo - Demo of Dropbox's password strength estimator.
Blockchain - Demo of how a blockchain works.
Youtube Fade In Alarm - Wake up to a song which is gradually faded up in volume over several minutes.
XML and JSON Converter and Comparer - Format, convert, and compare XML and JSON.
Pizza Calculator - Compare the price and total size of pizzas at various sizes.
Truth Table - Enter functions and see the truth tables they represent.
Relativistic Speed Calculator - Find the travel time with constant acceleration, taking into account special relativity.
Screen Size Calculator - Calculate the size of screen from the diagonal and aspect ratio.
Reddit Search - Allows you to do advanced searches on reddit using the built in search options.
Mailinator Generator - Creates logins for sites that you want to quickly register for but don't want to give your real email.
Hash Generator - Generates MD5, and SHA hashes from your input. Allows you to represent to output using whatever set of characters you want.
Color Picker - Lets you enter RGB color for foreground and background and displays it on text. Allows you to use hex, decimal, or percentage.
Color of Time - Converts hours, minutes, seconds in to a RGB color code, and displays it.