ILE RPG is an implementation of the RPG IV programming language in the Integrated Language Environment®. It is one of the family of ILE compilers available on IBM® i.

ILE is an approach to programming on IBM i. It is the result of major enhancements to the IBM i machine architecture and the IBM i operating system. The ILE family of compilers includes: ILE RPG, ILE C, ILE COBOL, ILE CL, and VisualAge® for C++. In addition to the support for the ILE languages, support for the original program model (OPM) and extended program model (EPM) languages has been retained.

Compared to OPM, ILE provides RPG users with improvements or enhancements in the following areas of application development:

• Program creation
• Program management
• Program call
• Source debugging
• Bindable application program interfaces (APIs)