VideoLan - VLC: Official site - Free multimedia solutions for all OS!
Okular - Okular is a universal document viewer based developed by KDE.
Renderforest Video - Free animation and intro maker, slideshow and video creator
Sumatra PDF - Sumatra PDF is a slim PDF/DjVu/EPUB/XPS/CHM/CBR/CBZ/MOBI viewer for Windows.
BombBomb - BombBomb allows companies to easily record and send video email from Gmail, mobile, or web.
Foxit Reader - Foxit Reader is a free and light-weight multi-platform PDF document viewer.