"Papers"-like software available ?

[preoche]

software to manage pdf files to recommend?
similar to Papers for Mac, where you can store your pdfs, search for comments you add inside them... something that really would stop me from printing ever again!

[UbuWu]

Referencer - http://icculus.org/referencer/

[simplyw00x]

Papaerbox as soon as it's developed a bit more: http://live.gnome.org/PaperBox