Speaking of PDF files, have you ever gone impatient with the time it takes for Adobe Reader to open a PDF file? You wait, and wait, and then it loads the file…
Sumatra PDF at the moment is my PDF viewer of choice (for Windows). Files load in just a matter of seconds and the program itself is tiny, just one file actually, nothing to install and take up hundreds of MB from your HD.
It is made to be simple and fast. Sumatra PDF doesn’t have that many features as Adobe’s software but really I don’t miss them. Do you really use all the features that Adobe packs into their reader software?
You can even download a portable apps version and have on your pen drive an excellent PDF reader wherever you go.