EZ Stellar Evolutionhttp://www.kitp.ucsb.edu/~paxton/EZ-intro.html
EZ (Evolve ZAMS) Stellar Evolution tracks the evolution of new (Zero-Age Main Sequence) stars throughout the bulk of their lives (until an event which EZ does not model occurs, such as a Helium Flash or core crystallization). The code is clean and well documented. Links include a web interface to the code.
Submitted in section: Astronomy: Software: Computational Astrophysics: EZ Stellar Evolution