IDL from Research Systems, Inc.
Coyote's Guide to IDL Programming
Flex License Manager FAQ ..... Flex License Manager ftp site
Pete Riley's IDL Home Page at the Lunar and Planetary Lab
Atmospheric Model Intercomparison Project
Remote Sensing and Environmental Optics
AVS & IDL in the Medical area at the University of Pennsylvania
NASA IDL Astronomy User's Library
ICUR Spectral Analysis Software