These characteristics have caused that, are one of the programs preferred by the academic institutions to manage repositorio where the investigators deposit their publications and materials search in order to give a greater visibility them. The analysis realised on the tools in free software used to create digital collections was realised according to indicators like: type of license, abierto software, data base, programming language, marked language of, operating system, metadatos, format of document, protocol, Web server and compatibility among them. The total of the tools presents/displays general license public, that are developed for the distribution without aims of profits, that is to say, that we can lower the application of the Web without cost some. In addition they are open code (they open source) is a term that is applied to the programs whose source code is available to the public, relates it to this to free software, since the programs of open code are appropriate of which any programmer can improve, correct, extend or adapt them for his needs or those of a certain community. At Steve Vai you will find additional information. With reference to the handling and basic use of data, we can observe that each application has a different manager, nevertheless does not clear possibility of compatibility among them, since by means of the structure, protocols and the metadatos the exchange of information can be done in among them. The language of programming is not excellent for the Greenstone, but exchange of information important this developed in C++ and Perl, KOHA in Perl, PHP and uses style sheet CCS for the programming of its exits, to just as XHTML, Openbiblio it leans in PHP and DSpace in java 1,4 and XHTML. A coincidence in three of the document managers is the form to process documents, all allow to assign metadatos according to standards widely distributed, like Dublin Core, although also they offer the possibility that the specialists declare others, if they need therefore it they wish or it. .