PowerSurge Publishing has released iWisdom, a freeware application that manages a collection of quotations made available from PortableWisdom.org.
You can view the content in a list view, a category view, an edit view and a display mode, and you can tell the software to randomly display a new quotation at a set interval.
iWisdom stores data in a new XML format, and can publish its results in HTML using included Extensible Stylesheet Language (XSL) templates and Cascading Style Sheets (CSS).
iWisdom is written in Java, and PowerSurge has made it available both as a zip archive and as a Mac OS X disk image file.