Informix Software, Inc.:Technical Information, Product downloads and sales material for all their Database products and development tools.
Archive of Informix Skilled Jobs: Mail archive of Informix related jobs includes contract and full time.
IIUG Popular Links: Popular Informix-Related Links
Marco on the Web: Several Informix related utilities and tips, including information on running Informix on Linux.
PRS Technologies, Inc.: Peter Schmidt offers Informix tool and database administration resources.