Chirp
Chirp is a twitter client library. It aims to provide full coverage of the Twitter REST API as well as a bunch of helper functions and methods to make interaction easier and more extensible.

The project can be found on github including a fully documented symbol index and a getting started tutorial.
As of March 2014, Chirp is on Quicklisp and implements all twitter API calls.

Chirp is licensed under the Artistic License 2.0.

web API