IS2 is a file generated by SmartWare software. SmartWare is a software package available for Microsoft Windows 95, XP, 2000, and NT. The package includes a database tool, a spreadsheet application, a word processor, and communication modules that use the IS2 file format.

The company that developed SmartWare (the current version is designated 4.5) was incorporated in 1983. SmartWare package is no longer developed.