1)   Batch Image Converter 3Plus 1.0
Universal Batch Converter allows users quickly convert thousands of files from one format into another: batch image resizing, batch Image converting, convert one type of file to another, multi-page TIF into single files, single files into one TIF.

 2)   Right GIF Converter 1.3
Advanced GIF converter that supports batch mode conversion to GIF file format, basic image editing actions and shell integration. You can call it from another applications or start on scheduled base using command line support.