HPCalc.org
Everything you ever wanted to know or needed for the HP calculators

HP48 FAQ
FAQ regarding HP calculators

The HP48 School
Collection of links to sites involving the HP48

HP49G Calculator Emmulator
A free emulator of the HP49

Casio Programs
A collection of programs for the Casio family of graphing calc ulators

Texas-Instruments Calculator Program Archives
Official TI Programs Archive