FidoCadJ is a very easy-to-use editor, with a library of electrical symbols and footprints (through hole and SMD). Drawings can be exported in several graphic formats (PDF, EPS, PGF for LaTeX, SVG, PNG, and JPEG). Although very simple and not relying on any netlist concept, FidoCadJ can be considered a basic electronic design automation program. FidoCadJ uses a file format containing only UTF-8 text, which is very compact and suited for copying and pasting with newsgroups and forum messages. This determined its success, as it is quite versatile for simple mechanical drawings as well as for electronics.
FidoReadPHP is a PHP class that can dynamically interpret data in the FidoCad/FidoCadJ format and produce an image corresponding to the data. The FidoCad/FidoCadJ format is used to store technical drawings in a compact text format that is very easy to embed in a Usenet post or a forum message.