STx is currently free for non-commercial, scientific, and student use. If you use STx, then please cite one of these articles. To apply for a license for commercial use, please contact the ARI office.

The STx 5.0 was released in September 2019. Since this version the workspace compact mode especially designed for linguists is included.

Do not install the rtanalyser and the freeware version in the same directory: the configuration files are incompatible.