You can find the standard PDFreactor installation packages (Windows with JRE, Unix/Linux, OS X) on the Download page.

Additional Installers

PDFreactor Windows 64 bit installer without JRE (191 MB)
PDFreactor Windows 64 bit archive with JRE (324 MB)

Java Library (JAR)

PDFreactor Library

Webservice

PDFreactor Webservice WAR

PDFreactor Webservice Clients