Works
Links
On Images
http://cosmopolis.com/people/porphyry.html
Collected fragments of this lost work by Porphyry, as well as links to other resources. Drawn from various translations.
Against the Christians
http://www.fordham.edu/halsall/source/porphyry1.html
An excerpt from a Porphyry tract against Christian irrationalism, as preserved by Eusebius.
On Images
http://classics.mit.edu/Porphyry/images.html
A translation by Edwin Hamilton Gifford of these collected fragments.