File list (Check if you may need any files):
9BackgroundProducer.class
GimpyEngine.class
impl
impl\DefaultBackground.class
impl\DefaultKaptcha.class
impl\DefaultNoise.class
impl\FishEyeGimpy.class
impl\NoNoise.class
impl\NoWater.class
impl\ShadowGimpy.class
impl\WaterRipple.class
NoiseProducer.class
Producer.class
servlet
servlet\KaptchaServlet.class
text
text\impl
text\impl\ChineseTextProducer.class
text\impl\DefaultTextCreator.class
text\impl\DefaultWordRenderer.class
text\impl\FiveLetterFirstNameTextCreator.class
text\TextProducer.class
text\WordRenderer.class
util
util\Config.class
util\ConfigException.class
util\ConfigHelper.class
util\Configurable.class
xConstants.class