The 5.4 version of SimulationCraft for Mac was available to download on the developer's website when we last checked. We cannot confirm if there is a free download of this app available. The application lies within Games, more precisely Tools.
The actual developer of this free Mac application is The SimulationCraft team. Simc-603-21-osx-x86.dmg is the default file name to indicate this app's installer. The most popular version of the tool is 6.0. We recommend checking the downloaded files with any free antivirus.
From the developer:
SimulationCraft is a tool to explore combat mechanics in the popular MMO RPG World of Warcraft. It is a multi-player event-driven simulator written in C that models raid damage. This app allows raid/party creation of arbitrary size, generating detailed charts and reports for both individual and raid performance.
You may want to check out more software for Mac, such as WiiJunkies, Rawr or iDistract, which might be similar to SimulationCraft.
Utilities