ratGPU 0.5.4 was available to download from the developer's website when we last checked. We cannot confirm if there is a free download of this software available. We recommend checking the downloaded files with any free antivirus.
The following versions: 0.5 and 0.4 are the most frequently downloaded ones by the program users. StandAloneRenderer.exe is the most frequent filename for this program's installer. This free tool was originally designed by Santiago Orgaz. The software lies within Home & Hobby Tools, more precisely Entertainment.
From the developer:
ratGPU is a free OpenCL ray tracing renderer. Currently it works for 3dsmax 2010/2011/2012 but I plan to support Maya too. It also includes a benchmark. ratGPU is under heavy development, so except more optimizations in the future. Well, here are three charts showing the performance
You may want to check out more software, such as jMetronome, ECOLOTOFOOT or FW Timer, which might be related to ratGPU.