Bibfilex is far less advanced than other bibliographic managers like JabRef or KBibTex, and allows only few customizations. Its strength is simplicity, speed, especially when used with many items, and lightness: it's a compiled software (no runtime needed, like Java Virtual Machine or .Net framework) and uses a fast database to store data. Furthermore, it run natively on GNU/Linux with GTK or Qt libraries, on Windows and OS X with Carbon libraries. Bibfilex may create and manage files which are catalogs of many items -- also thousands of them. A file of Bibfilex is a database of SQLite (www.sqlite.org ), a popular software whose data can be easily read and exported through different tools available on the Internet. In a Bibfilex file data are not stored according to Biblatex format, so it cannot be referenced as bibliographic file within a Latex document. Anyway, Bibfilex may export automatically or with a one-click functionality all or part of the content of a file in a Biblatex format file; this one can be read directly with JabRef, imported in Zotero or be referenced in a Latex document. At the same time, Bibfilex may import directly a JabRef database or any other BibLatex file with the same structure. Bibfilex introduces few changes in the position of some fields when compared to the official manual of Biblatex. In the list of the required fields have been added some others which sometimes are requested in the humanistic field -- like “publisher”, “location”, etc. In this way, all the fields which are more frequently compiled are show all together in the “Main fields” section of the interface.