A-PDF Restrictions Remover removes password and restrictions of PDF files in a few seconds.
A-PDF Password Security is a desktop utility program that lets you change password security of existing Acrobat PDF files. That means you can protect PDF files with 128 bit encryption, or remove existing password protection. It can handle either single or batch documents. Another convenient features include password pool and hot directory.

Sumatra PDF Portable 0.8.1 has been released. It's the lightweight Sumatra PDF viewer packaged as a portable app, so you can view PDFs on the go. This release updates Sumatra PDF to the latest version adding in more languages, search, table of contents, printing improvements and more. It's packaged in PortableApps.com Format for easy use from any portable device and integration with the PortableApps.com Suite. And it's open source and completely free.

Features:
Sumatra PDF is a slim, free, open-source PDF viewer for Windows. Sumatra has a minimalistic design but still has most of the features you need from a PDF viewer. It's small and starts up very fast.