From VERTX SYSTEMS:
Merge and Split PDF Files is a snap. Split your PDF files by page or by page range. You can select the location of where to save the new file/folder. You can view the split documents directly in the PDF splitter/merger window. Split by page ranges, split pages, page ranges, and odd/even pages. Select file destination location of split PDF will be saved. Split and view function, view new document immediately. Merger function includes the ability to quickly add files or folders, sort them, edit or remove them. Combine PDF documents into a single PDF file. Version 3 may include unspecified updates, enhancements, or bug fixes.