Foxit Reader is a small, free, and complete viewer of PDF documents. The program stands out specially because it opens documents in a pretty fast way. Besides, it uses a minimal amount of system resources in comparison to other programs of the type.
Your experience on reading PDF files can be enriched thanks to the many features included in the program. For example, you can highlight as many portions of texts as you desire, as well as underline, strikeout, and squiggle. In addition, you can save these documents with your personal improvements (new in this version 3.1), but as it is a free version, a watermark will be added on them.
On the other hand, you can view your documents in different ways. For instance, the program can show the pages in an automatic scrolling way. Or you can view the document as a text file. You can also use the magnifier tool to view any part of the document as if you were using a real magnifier glass.
Furthermore, there are many add-ons you can download (some of them are paid) to improve your PDF documents.
Finally, improvements on this version (3.1) are:
Now you can perform a direct search on Internet of any word or phrase in the document. The favorite toolbar can be customized according to your needs. A new panel for comments and all its features is now available. Also, the program's interface has been redesigned, and is more friendly now.