Image.class is a PHP class that can be used to generate images with graphic primitives defined programmatically. It can create an empty image with a given size or load an existing image from a JPEG, PNG, or GIF image. The class can render graphic primitives in the image like drawing a text string with optional border, copying parts of the image to another position, drawing ellipses, rectangles, and lines, and scaling the image to a given size. The generated image can be saved also in JPEG, PNG, or GIF formats.
wp-popeye (Popeye) presents images from the Wordpress media library in a nice and elegant way within your posts and pages. Use it to save space when displaying a collection of images and offer your users a simple way to show large versions of your images. It is based on jQuery.popeye and does not employ a disruptive modal window to display large images, allowing all thumbnails and the large images to be browsed in a single image space. It also repects the page flow and stays anchored and rooted in the Web page at all times. The plugin is very easy to set up and integrates automatically into your posts, or allows you to use a shortcode. It comes with several styles but can be also easily customized.
geh is a simple command line image viewer with various nice features. It currently supports a slide-show mode displaying multiple images in a row either controlled by a time interval and/or mouse button clicks, and a thumbnail mode creating small thumbnail images and caching them in ~/.thumbnails according to freedesktop.org's thumbnail specification.
The Generic Image Decoder (GID) is an Ada package for decoding a broad variety of image formats, from any data stream to any kind of medium, be it an in-memory bitmap, a GUI object, some other stream, floating-point data for scientific calculations, a browser element, a device, etc. Animations are supported.