Cool PDF Reader This viewer has many the features of Adobe Reader, but unlike Adobe Reader, Cool PDF Reader loads PDF files extremely fast. Conversion from PDF to text and graphics formats is included. Cool PDF Reader allows conversion from PDF to text, and even graphics.
Sumatra PDF Viewer Sumatra has a minimalistic design, with its simplicity attained at the expense of extensive features. Sumatra takes up little disk space with an installed size of only 1.2MB, whereas Adobe Reader requires 335 MB of available disk space.