BoxTop Software
ImageVice
Trial versionMake GIF, PICT, BMP and PNG images up to 70% smaller.
Windows
ProJPEG for Macintosh
Trial versionProJPEG for Macintosh: Advanced Image Compression Tool
MacPhotoGIF for Macintosh
Trial versionComprehensive Animation Tool for GIF Creation
MacColorSafe
Trial versionColorSafe: Color Management Tool for Mac
MacGIFmation
Trial versionCreate Animated GIFs Effortlessly with GIFmation
Mac