Foxit Reader 4.0 is a free safe PDF Reader alternative to Adobe Acrobat.

For most people, when the need arise to work with Adobe PDF files, it became almost like second nature to use Adobe Acrobat Reader which dominate the market in that category.Licensing fees and recent widely publicised security concerns linked to the Adobe Acrobat, have made it opportune for some PDF Reader alternatives to be given a second look by users.
Heavy weights like Google have gotten into the act with the search giant release of Google Reader as part of its Google Docs. Beside Google, some much less known players like Foxit Sofware have their own free PDF Readers.
Foxit Software recently announced the release of its recent version of its free PDF Reader called Foxit Reader 4.0.
According to AppScout, Foxit version 4.0 reader allow users to do comment, spell check documents collaboration, to populate PDF forms all that with a multi-level security and multimedia support.

For more, see AppScout.com