RDi - IBM Rational Developer for i
Provides a comprehensive Integrated Development Environment for edit/compile/debug of traditional RPG/COBOL/C/C++ i5/OS applications.

RDi SOA - IBM Rational Developer for i for SOA Construction
IBM Rational Developer for System i for SOA Construction can be used to extend and modernize existing RPG/COBOL applications with EGL and HATS and through the use of Web Services.

WDS - IBM WebSphere Development Studio for i
Provides tools and programming languages to create modern i5/OS solutions.

HATS - IBM Rational Host Access Transformation Services
HATS transforms terminal applications quickly and easily!

HIS - IBM Rational Host Integration Solution
HIS extends mission-critical business systems to the Web, independent of the host system.