Some potentially useful programs / scripts that I've written:
An online tool that counts lines and characters for UCAS personal statements
A server-side script which parses Nyaa.si torrent pages to create an RSS feed of its comments. Source code available (GitHub mirror).
A chess clock that runs on your web browser. Convenient and intuitive UI on both desktop and mobile devices (tested on Kindle Touch).
An application indicator for Unity that simulates keyboard lock keys LEDs (Caps Lock, Num Lock and Scroll Lock)
An application indicator for Unity that displays the current date and time in lunar calendar
Allows Pygments to recognize GTK+ types for highlighting
A userscript which allows you to navigate xkcd comics using your keyboard only
Static filter for uBlock Origin which blocks content farms and other fake news sites with contents mainly in the zh locale