HFST
| Helsinki Finite-State Technology | |
|---|---|
| Developer(s) | HFST team | 
| Initial release | 2008 | 
| Stable release | 3.16.2
   / January 18, 2025 | 
| Repository | |
| Written in | C++, Prolog, Python | 
| Operating system | Cross-platform: Linux, Mac OS X, Windows | 
| Platform | x86 | 
| Available in | English | 
| Type | Finite-state toolkit | 
| License | GPLv3, part Apache | 
| Website | hfst | 
Helsinki Finite-State Technology (HFST) is a computer programming library and set of utilities for natural language processing with finite-state automata and finite-state transducers. It is free and open-source software, released under a mix of the GNU General Public License version 3 (GPLv3) and the Apache License.