2 is a one of many file formats associated with ViaVoice application developed by IBM. Files with 2 extension are considered obsolete as the application that used them is no longer developed. 2 files were used for storing various scripts.

ViaVoice was an advanced speech recognition software application. It offered an unique feature that allowed the program to learn voice patterns and user idiosyncrasies based on speech samples, which made it more efficient that its competition. Modern, AI-based speech recognition solutions offer superior capabilities and thus render ViaVoice obsolete.