Foxit Reader - Opens, save, and prints PDFs much faster and lighter than Adobe's official reader, whether on your desktop or through your browser, and it won't nag you every two hours to update it or its "components." There are some down-sides, like how it asks to install a browser toolbar during installation, and some reported difficulties with multiple monitors. But if a document absolutely won't work with anything but Adobe-sanctioned Reader, try Adobe Reader Lite, which cuts out all the "Maybe You'll Also Like" add-ons and extras out of Adobe's product and leaves just its basic rendering intact. [Download]