Exiv2 is a C++ library and a command line utility for managing image metadata. It provides fast and easy read and write access to the Exif, IPTC, and XMP metadata of images in many formats. The Exiv2 command line utility prints Exif, IPTC, and XMP metadata including Makernote tags in various formats, adjusts Exif timestamps, renames images according to the Exif timestamp, extracts and inserts Exif, IPTC, and XMP metadata and JPEG comments, or deletes the thumbnail or a specific type of metadata from an image.
FFView is a fast OpenGL-powered picture viewer a la ACDsee. It is aimed at letting you read manga or other comics onscreen (in either windowed or fullscreen mode). Its features include fast prefetching, smooth panning, voice commands, the ability to browse pictures inside archives (.rar/.cbr, .zip/.cbz) and persistent per-picture options.
This is an archived comic book reader. The original intent was to create a comic book reader for Mac OS X that did fullscreen and supported cbz and cbr files. It supports two-page view and directories of images. It also works on systems other than Mac OS X, but only supports cbz files.
JLM image viewer is able to view standard image types as well as JLM and PLM image types. It is also able to lighten or darken an image using a "lightspace" technique. The technique is equivalent to changing the exposure time of the camera which took the image. The lightening or darkening method is generally considered superior to techniques found (such as gamma correction) which are found in image manipulation programs such as photoshop or the GIMP.
PDF 2 PSP is a simple tool for converting PDF documents and printouts into JPEG images suitable for displaying on the Sony PSP handheld game console. This allows you to download e-books, game manuals, album liners, etcetera to your PSP. Once they're on your PSP, you can read them anywhere. Because of the extensive PDF support built into OS X, any document you can print can be stored as a PDF and converted and downloaded to your PSP. It works best when used with a PSP synchronization tool such as PSPWare, but it can also be used as a stand-alone tool.