A simple command-line calendar utility written in Python. It is similar to the standard `cal` command but includes features like highlighting the current date, coloring weekends, and supporting holidays (localized for Japan).
A Google Chrome extension that helps you download images in their original size and quality from various websites.
A simple, efficient flashlight application for Android devices.
A Sudoku Solver API and Web Interface. Enter a puzzle below and let the algorithm solve it for you. Also available as an Android App.
A simple, live-preview Markdown editor for writing and testing Markdown syntax directly in your browser.