Free PDF Splitter Merger 4dots is an online application that allows users to split and merge PDF documents quickly and easily. It supports a wide range of features such as splitting a PDF into multiple files, merging multiple PDFs into one file, rotating, cropping, changing the page order and adding watermarks, text and images to the PDF. It is completely free to use and does not require any installation. Additionally, it supports a wide range of formats such as Word, Excel, PowerPoint, etc. It is a great tool to help users manage large PDF documents in an organized way.
Discontinued The program seems to be no longer updated. The last version, 0.9.1, was released on March 3, 2011 and since then only translations have been made to the project. It can still be downloaded from the official website.