All HFST command line tools and API library are released via Apertium as Debian packages for Linux, win32 executables for Windows and universal binaries for Mac OS X. See our wiki pages for installation instructions. Download statistics are available for packages hfst and hfst-ospell.
You can also compile HFST from source.
Our resource directory (currently hosted on SourceForge) offers transducer binaries for morphological analysis, spell checking and hyphenation, and installable collections of those and some other linguistic resources. It also contains C++, Java and Python implementations for performing fast lookup on transducers in the optimized-lookup format.