QR CodeGenerator by Aspose.BarCode for Java is an opensource webapp
QR CodeGenerator by Aspose.BarCode for Java is a web application to generate various types of QR Codes using Aspose.BarCode for Java.
http://goo.gl/GqUMog
JFractals is a fractal generator written in Java. JFractals allows you to zoom into Julia sets and the Mandelbrot set. JFractals supports multithreaded rendering, antialiasing and multiple colouring methods.
Mandelbrot set image generator for really deep zoom levels. The generator supports both online and batch processing and can be used to zoom step by step into the mandelbrot set.