Download of Otomata 1.0 for Mac was available from the developer's website when we last checked. We cannot confirm if there is a free download of this app available. We recommend checking the downloaded files with any free antivirus. The program lies within System Tools, more precisely Device Assistants. This free Mac app was originally developed by DashboardMusic.
From the developer:
Otomata is a generative sequencer. It employs a cellular automaton type logic I’ve devised to produce sound events.
Each alive cell has 4 states: Up, right, down, left. In each cycle, the cells move in the direction of their internal states. If any cell encounters a wall, it triggers a pitched sound whose frequency is determined by the XY position of the collision, and the cell reverses its direction.
You may want to check out more software for Mac, such as iStar Composer, Matchprint Virtual or FieryRemoteScan, which might be similar to Otomata.