PDF Encrypt allows you to encrypt (using standard 40-bit or 128-bit supported by Acrobat Reader 5.0 and up) existing PDFs, set permissions, add user and owner password.
Downloads: 71855 - Shareware - Download Now

File Splitter can split any type of file into smaller pieces and rejoin them to the original file. It helps you copy the split ones to floppy disk or CD/DVD, or send them via e-mail.
Downloads: 48098 - Shareware - Download Now

Pdf merger software combine multiple pdf files together, add several pdf files into one, concatenate thousands of files instantly, easy to use GUI based pdf combiner application join pdf files according to requirement even in reverse order.
Downloads: 45576 - Shareware - Download Now

SysTools Split PST software is one of the tested and trusted software to split large PST file into smaller parts.
Downloads: 33873 - Shareware - Download Now

Split any size/type, compress, add password, Automatic SFV CRC32, Self-Join capabilities and more ...
Downloads: 56791 - Shareware - Download Now