The XFA library implements an API that can be used to create NFA (either programmatically or from regular expressions) and to convert them in the minimal equivalent DFA. The XFA library only requirement is an ANSI C compiler, and this makes it portable virtually over every system. The complexity of the graphs that are treatable with XFA is only limited by the amount of memory available on the machine.


The XFA library man page is available : HTML   TXT    PDF

License and Software

XFA  is made available through the GNU LGPL license together with the complete sources. Please read carefully the license before using the software. The latest library package is available here :

Version 0.18

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