No specific info about version 4.1. Please visit the main page of Accounted on Mac Informer.
Split&Concat is a useful program that allows you to split and concat files.
It splits video files into smaller pieces and joins scenes into a new file.
Extract given page ranges as well as merge various PDF documents.
Drop-split is a free GUI wrapper application for the BSD command split.
PDF Split & Merge is a free open source tool to split and merge pdf documents.