We present the work undertaken by the Evolution and Seismic Tools Activity
(ESTA) team of the CoRoT Seismology Working Group. We have focused on two main
tasks: Task 1 - now finished - has aimed at testing, comparing and optimising
seven stellar evolution codes which will be used to model the internal
structure and evolution of the CoRoT target stars. Task 2, still underway, aims
at testing, comparing and optimising different seismic codes used to calculate
the oscillations of models for different types of stars. The results already
obtained are quite satisfactory, showing minor differences between the
different numerical tools provided the same assumptions on the physical
parameters are made. This work gives us confidence on the numerical tools that
will be available to interpret the future CoRoT seismic data.Comment: To appear in: "The CoRoT Book", (Eds) F. Favata, A. Baglin & J.
Lochard, ESA Publications Division, ESA S