The project can be found on github including a fully documented symbol index and a getting started tutorial.
As of December 2015, Simple-inferiors is on Quicklisp.
Simple-inferiors is licensed under the Artistic License 2.0.
simple-inferiors
This is a library to allow easy handling of external processes, and primarily to get their output. It handles proper copying of stdout and stderr of the process simultaneously, both in a sequential and parallel fashion. It also features a lazy directory switching mechanism, to avoid running into parallelism problems when having to chdir.