Keck Data Reduction Resources

This is a package put together by Jason X. Prochaska, Joe Hennawai, and Scott Burles to reduce spectra from a number of instruments.
There are two specific packages made for HiRes and ESI.

This is a set of IRAF scripts put together by Dan Stern, Adam Stanford and Andy Bunker. Currently, Dan Stern does much of the maintenence. Like with Matt Auger's package, this is mostly self-contained but written for a single purpose, to reduce multi-slit LRIS data. The big advantages are that it is fast but produces published data. This is very handy for use at the telescope.

Dan Kelson of OCIW has put together a large package of Python software that can reduce data from a number of spectrographs, ranging from echelles to low resolution multi-slit data.
The software is completely self-contained.
Currently there are no procedures specifically for ESI or HiRes, so the prospective user would have to adapt the routines for the OCIW MIKE spectrograph.