This is zosc 0.4, a OSC library for PWGL (http://www2.siba.fi/pwgl/)

To install:

Place all folders inside your PWGL-User directory (overwriting older ones if neccessary).
in OSX it is in ~/PWGL-User/User-Library (i.e.: /Users/<your username>/PWGL-User)

Open PWGL, load the zosc library (File/Load Library) and then go to Help/Pwgl Help. 
In the pane Library Tutorials you will find some examples.
(Pd-extended, Max/MSP, SuperCollider and Processing simple examples are included to test the library).

Future versions will be reachable in these URLs: 
https://github.com/zepadovani/zosc 
http://zepadovani.info/etc.html

zosc is based on OpenMusic osc implementation and is GPL licensed.

Thanks to Mika Kuuskankare for the suggestions/corrections. 

For more help write to the PWGL list.