Sumatra PDF is a Free PDF, XPS, DjVu, CHM, CBZ and CBR Reader for Windows. (Mantap+Simple and Pastinya Halal)

What is Sumatra PDF?

Sumatra PDF is small and starts up very fast.
Simplicity of the user interface has a high priority.

Contributing code

Sumatra is an open-source project under GPLv3 license. If you want to join Sumatra development, the process is simple:

• write a patch against the latest sources
• create a new bug in issue tracker and attach the patch.
• make sure to describe what the patch is trying to fix and why (not every change is good)
• we'll review the patch and either incorporate it into sources (if we think it's good) or describe how it needs to be improved 

So?? Tunggu Apalagi? Langsung Download And Be A Free.... ^-^
Download Now

Sumber : http://blog.kowalczyk.info/software/sumatrapdf/free-pdf-reader.html