There is a paperless environment in almost all the offices nowadays, because all the documents have made their way in Computers, here , pdf files play an important role as they are widely used and are handy. But, Acrobat Reader from Adobe can be bit expensive if you have a small groups of people in your company or you work on your own. You will find many free pdf creators but most of them are trial based or come with loads of limitations. 

Here is a list of all the free alternatives to Acrobat Adobe.

PDF Readers

• Sumatra PDF .
• FoxIt Reader:
• PalmPDF:
• Evince:
• Preview:
• ePDFView:
• Okular: 
• Xpdf: