A micro-enterprise needs like minimum that is guaranteed to him that accessible data that it generated today will be morning. A company cannot be allowed totally unnecessary expenses being able to enjoy software that it guarantees to him that it happens what always happens will be to its disposition the source code so that this one does not depend on a company for its maintenance but on an increasing community of programmers and users all over the world that works in the development and maintenance of that piece of software. The importance of a TPV frees and multiplatform One tpv multiplatform offers the simple guarantee that the user does not have to depend on a manufacturer of hardware by more infallible than this can seem and it does not need to put in risk the data of his company. The user can change hardware in all the organization if therefore he considers it advisable and without the disadvantage of licenses of software privative that can stop this type of developments retiring the support of software when it migrates to other platforms of hardware. A TPV frees generally is programmed on lenguages multiplatform like java, Perl or php what tpv of portable free software to almost any type of hardware platform does to one. Ejemplode a TPV frees and multiplatform is OPENBRAVO that is in openbravo. org Andres Hispanic Directory Sanchez I have evolved for more than 6 years like system adiniatrator programmer Linux and. I am a fanatic apacionado by free software and the new technologies generally, the extreme sports and the languages. I practice a diciplina of bicicross well-known like flatland. At the moment recido in Bogota Colombia from where development projects based on free software.