From Winsome Technologies:
TIFF Combiner is an application to combine thousands of TIFF and Image files into one or more TIFF document in minutes. It's powerful yet simple and extremely easy to use interface to combine various image formats & TIFF into TIFF in few clicks only. The application supports various image formats, like jpg, jpeg, png, bmp, gif and tiff. To address various needs of the user, the application provide different options, like combine all the TIFF & image files into one TIFF, combine group of image & TIFF files into more than one TIFF files etc. You can change the compression of the TIFF files created.