


For those who are looking specifically for free software that has been designed using open standards (rather than proprietary ones), a list of such software is on this site. More free alternatives to Adobe Reader are listed on this site. Foxit Reader ( for Windows, Linux, and mobile devices).Their features may not be as complete as those of Adobe Reader – for example, they may not be able to properly display everything in a complex PDF file created by the most recent versions of Adobe's PDF creation software, or they may not be able to allow text entry in a PDF with fillable fields – but they are much smaller in size and many of them can be run from portable devices such as USB flash drives:

There are other free software options that can be used to view most PDF files.
