Hello Vincent,

Vincent Leander Bermel s6viberm@uni-bonn.de, Thu 2014-11-13 15:45:

in case you don't mind includingg readers which do not run on GNU/Linux you could have a look at the following:

We are happy to include Free Software readers for all OS platforms.

I'll start with sumatra:

• For Windows: Sumatra PDF (GNU GPL v3)

For a long time SumatraPDF has used a nonfree software library to load documents packed with the RAR format. Only recently have they switched to a Free unrar implementation and we are happy to finally include the reader in our list.

• For Replicant/Cyanogen Mod/Android... : A few ones in the F-Droid repository:

https://f-droid.org/repository/browse/?fdfilter=pdf&fdpage=1&page_id... 0

I agree we should list the freely licensed readers from there. You can help us with getting this done. Take a look at https://svn.fsfe.org/fsfe-web/trunk/pdfreaders/readers/ (especially template.nolang.xml). If you like, you can email us new reader definitions and patches for the existing ones.

• For Mac OS: Skim PDF (3-clause BSD): http://skim-app.sourceforge.net/ http://sourceforge.net/projects/skim-app/

Unfortunately Skim is not entirely Free Software. Only the front-end of Skim is available under a Free license, the back-end (its rendering engine), which does most of the work of reading PDF files, is under a separate, proprietary license.

Statements on sourceforge about Skim's licensing only refer to the parts which are Free Software; sourceforge does not host all parts of Skim that are required to make it work, including those parts which are proprietary.

This is why we do not list Skim on pdfreaders.org, although we have been aware of it for some time.