EXPO software is distributed free of charge for academic, scientific, educational, noncommercial users and not-for-profit use.
It is required the payment of a license fee to commercial users.
For information about the distribution of EXPO, please, contact caterina.chiarella@ic.cnr.it.
A partial list of changes is available in the change log.
Windows

expo2-2.3.9-win64.exe (ver. 2.3.9, built on September 15 2025)
1 file(s) 87.96 MB
expo-271122-x64_install.exe (the legacy version, Expo2014, built on November 27 2022)
1 file(s) 9.12 MB
Mac OS X
Linux

expo-2.3.9-jammy_amd64.deb (built on September 25 2025)
1 file(s) 8.34 MB
expo-2.3.9-noble_amd64.deb (built on September 25 2025)
1 file(s) 8.46 MB
Please follow the instructions to install EXPO. Previous versions are considered obsolete, but they remain available for download on this page.