1. Introduction

VEGA was developed to create a bridge between most of the molecular software packages, as Quanta/CHARMm, Insight II, Mopac, etc. In this tool, some features have been implemented to analyze and manage 3D structures of molecules. VEGA is written in high portable code (standard C language) and can be executed on a lot of hardware systems simply recompiling the source code. The program is already tested on the following operating systems: IRIX (Silicon Graphics), Windows 9x/NT/2000/XP/Vista/7/8 PCs, Linux, FreeBSD, NetBSD, AmigaOS, etc.

The most significant features implemented in VEGA are: