TL:DR; Batch TIFF Toolkit which allows you to resize, merge, extract, delete pages from multipage TIFF documents.
ComboTIFF Pro is a batch TIFF toolkit which allows you to resize, merge, delete, reorganize pages from within multipage TIFF documents. You can build a brand new multipage TIFF file from pages from other TIFF, PNG and JPEG files.
CollageIt is an easy-to-use and automatic collage maker, which makes photo collage automatically. There are only three steps to make your stunning collage: add photo, set parameters and generate collage preview, save collage as image format.
This software offers a solution to users who want to combine multiple audio files with multiple image files. Simply add files to queue individually, by folder, or by drag-and drop. This software can save you hours by processing your WebP files.
DWG to JPG Converter Pro is a batch converter that allows you to convert DWG and DXF files to JPG (JPEG), BMP, TIF (TIFF), GIF, PNG, TGA, PCX, WMF and EMF without the need of AutoCAD. The Pro version supports command line.