Some catalog houses are saving money by doing more in-house. These days that's easier to do, given the proliferation of catalog software that integrates the tasks of order entry, fulfillment, inventory, list maintenance, and response analysis. The Guide to Catalog Management Software (215-576-5000) makes picking a package much less daunting. Written by Catalog Age software reviewer Ernest Schell, the guide is available in three volumes, organized by hardware type: microcomputer ($95), Unix/Pick ($145), and minicomputer ($295). The volume on micro software ranks 10 programs and presents a detailed analysis of each, along with sample screens and reports.