Qfsm is a Photo & Image software developed by Stefan Duffner. After our trial and test, the software is proved to be official, secure and free. Here is the official description for Qfsm:
BS Editor: Qfsm is a graphical editor for finite state machines written in C++ using Qt the graphical Toolkit from Trolltech.
Finite state machines are a model to describe complex objects or systems in terms of the states they may be in. In practice they can used to design integrated circuits or to create regular expressions, scanners or other program code.
Current features of Qfsm are: Drawing, editing and printing of Diagrams Binary, ASCII and "Free Text" condition codes Multiple windows Integrity check Interactive simulation HDL export in the file formats: AHDL, VHDL, Verilog HDL, KISS Diagram export in the formats: EPS and SVG State table export in Latex, HTML and Plain Text format Ragel file export (used for C/C++, Java or Ruby code generation) you can free download Qfsm 0.52 now.