SDExplorer

SkyDrive Explorer
Version 2.1.0.102
Updated May 22, 2010
Added Mar. 17, 2010
Developer/Homepage
File Size : 2.0 Mb
Compatibility : Windows Vista/Windows Server 2003 and 2008/Windows 7
Download

From the author's site, "SDExplorer (formerly SkyDrive Explorer) is a free, easy-to-use, but very powerful extension for Windows Explorer. With SDExplorer you can make any every-day operations with your documents from Microsoft Live SkyDrive service using Windows Explorer, as if they were on your computer.

Sumatra PDF

Sumatra PDF
Version 1.1
Updated May 20, 2010
Added Nov. 28, 2009
Developer/Homepage
File Size : 4.21 Mb
Compatibility : Windows 2000/XP/Vista/7 **
**Windows 95, 98 and ME are not supported.
Download
Download** (**additional d/l links location)

From the author's site, "Sumatra PDF is a slim, free, open-source PDF viewer for Windows. Portable out of the box.Sumatra has a minimalistic design. Simplicity has a higher priority than a lot of features.
It's small and starts up very fast.
It's designed for portable use: only one file so you can run it from external USB drive. Doesn't write to registry."