These are simple little utilities for converting Newton books (a popular format of e-book) into text. We use them locally on ShellTown to allow ShellTown shell users to read the contents of Newton books and on Saugus.net in conjunction with ht://Dig to index Newton books for Web searching.
These have been tested on Solaris, FreeBSD, OpenBSD, & Mac OS X, but should work on pretty much any UNIX-like system.
The code isn't the prettiest in the world at this moment; we're working on a Newton book handling library that should make things a little friendlier.
More documentation on the Newton book format can be found at:
Loads of sample Newton books can be found at:
There are a couple different free tools for creating Newton books. A Google search for "Newton Press" or "Newton BookMaker" should find you some.