A sleek, minimalist PDF reader that only takes up a couple of megabytes on your hard drive. If you simply need the basics, SlimPDF might just be the solution for your PDF needs.
These days it seems as though there are more PDF readers available than anyone really knows what to do with. There are options from well known companies and those from unknown and untested companies as well.
Some companies try to keep it simple, some try to create a one-stop-shop location by creating multi-tools which are great and have their place in the world. However, they are not always the best way to go about a given task. Having any given program or tool be able to solve several tasks can be wonderful for many scenarios but when it comes to opening PDFs, that is not always the case.