RocketFuel 2.3.2 for Mac was available to download from 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 System Tools, more precisely System Optimization. The actual developer of this Mac application is Ardalan Samimi. We recommend checking the downloaded files with any free antivirus.
From the developer:
RocketFuel is a small, easy-to-use app that sits discreetly in your menu bar waiting for your command. One simple click prevents your Mac from going to sleep or dimming. The tool can be configured to auto-launch on computer start-up. In addition, it can deactivate automatically after a preset time or on low battery level.
You may want to check out more Mac applications, such as WebGrab-FF2, Dream Day Wedding Married in Manhattan or FanControl, which might be related to RocketFuel.