Bigwood, David wrote:
> I recently became aware of Open Publication Distribution System
> (OPDS) Catalog format, a syndication format for e-pubs based on Atom
> & HTTP. 

mobile bookreaders have native opds support (i'm happy with aldiko or
moonreader on android).
for my personal epub collection i use py-clave, a python server that
publish an opds feed (with other api too) of your book library:

https://github.com/gabalese/py-clave
http://docs.pyclave.apiary.io/


--
raffaele, @atomotic