Derive: The Mathematical Assistant--available from SOFT WAREHOUSE, INC. 3660 Waialae Avenue, Suite 304, Honolulu, HI 96816, U.S.A. ; Phone: (808) 734-5801; FAX: (808) 735-1105; Web: www.derive.com; Cost: $199 ($69 for teachers or students with proof of school affiliation).
Collins Dictionary/Thesaurus and Collins Multilingual Dictionary--is available from Thaddeus Computing, Inc.; Web: www.Palmtop Paper.com
Easy Cat--$26.95, is available at most computer stores (e.g. CompUSA.)
AutoSketch 1.01--is no longer available.
Post/LX--is part of the WWW/LX suite by D&A Software. A demo is available at http://www.dasoft.com and includes instructions on registration.