Read and annotate scientific papers in PDF. Stop printing and start skimming. Skim requires Mac OSX 10.6 or higher.
Nice PDF reader
Ok it's the best PDF reader for Mac and very ergonomic with its multiple types of annotations.... but the annotations are not displayable in other pdf viewer software (adobe, pdf-xchange viewer) including the one that is freely included with a Mac (Preview). So collaboration wise, not interesting.
This is in reference to SKIM. Since one of the last updates the free hand drawing tool now lags behind the actual writing using a WACOM table. It is so slow you can't see what you have written or where it is written until a significant time lapse. It use be that you wrote as if you were writing on paper. Now it is basically useless to use as a note taker. Is there some setting that controls this or can you revert it back to the way it use to work.