EDF's open-source simulation software, free to access

Developed by EDF R&D, one of the world’s leading energy innovators, these codes are backed by more than 35 years of scientific expertise. They provide engineers and researchers with reliable tools to innovate, cut costs, and maintain full control over their simulation solutions.Explore the software and use casesico
openTELEMAC logo

The TELEMAC system has been developed by EDF’s R&D and its French and international partners for over 35 years. It consists of a suite of coupled and parallelized scientific computing codes aimed at modeling freesurface environmental hydraulics.

Explore the software and use cases
Select a product

Choose a version

All Versions - openTELEMAC

VersionRelease dateRelease noteAdded on
9.1

Stable

March 10, 2026
9.1.1

Stable

May 20, 2026https://gitlab.pam-retd.fr/otm/telemac-mascaret/-/releases/v9.1.1October 8, 2026
9.0

Stable

April 8, 2026April 8, 2026
v8p5

Old stable

October 3, 2025
v8p4

Old stable

October 13, 2025

Discover the Simvia tools associated with openTELEMAC

All tools