GTT-TECHNOLOGIES
We help you navigate in chemical space.
Upcoming Courses: FactSage: May 11–14, 2026 | Calphad Optimizer: April 21–23, 2026 | ChemApp for Python: self-study online courses
Important: December 2025 error prevents all FactSage versions from starting as in 2026 -> Patch installation guide
NEWS
The Call for Speakers is now open! Share your work at the 2026 Users’ Meeting.
Calphad Optimizer 3.0 is here, introducing XML support, parallel runs, and improved usability. Explore what’s new.
Users’ Meeting 2026: Call for Speakers now open!
Share your insights and join us in Aachen & online.
ChemApp for Python 8.3.4 enables faster, more realistic process modelling: Read more in our blog and user documentation.
THE GTT UNIVERSE
SOFTWARE
Use our software to analyze a wide variety of technical problems - in metallurgy, energy conversion, materials design or materials informatics. Increase your understanding to improve your product and your productivity!
DATA
The principle aim of our thermochemical data supply service is to satisfy our customers' needs for consistent, carefully assessed data of known quality in an easily usable form.
CONSULTING
With our consulting services you can reap the benefits of technical thermochemistry right away!