Python

Mojykard: a GUI flashcard program written with tkinter that I wrote using a model-view-controller architecture. There is significant use of inheritance in the program's class structure.

Javascript

Charts: a program that creates bar charts, line charts, and pie charts that can be placed into a webpage. It makes use of the D3 library to create the charts in an SVG element.

PHP

Gallery: a very small, simple program that creates an image gallery. It reads a text file to get the file names and descriptions of the images then generates HTML code.