FreeSoftwareTools.net

Foxit Reader is a freeware lightweight pdf reader with great features bundled.

It's main feature over adobe pdf reader is it's velocity opening the pdf files, you will easily notice the difference.
Foxit Reader support the "text view mode", with this option you can easily copy the text of a pdf.
You can also add comments to your pdf files.

In the download page click on the "More Download" link and download the zip version in order to get the portable edition of this powerful pdf reader.
On the page (download page) you can find critical add-ons for the Foxit Reader.