Maverick Studio is described as 'GPU-accelerated render engine for engineers, designers and artists'. There are more than 25 alternatives to Maverick Studio for a variety of platforms, including Windows, Mac, Linux, Autodesk 3ds Max and Sketchup. The best alternative is Adobe Dimension. It's not free, so if you're looking for a free alternative, you could try LuxCoreRender or appleseed. Other great apps like Maverick Studio are Keyshot (Paid), V-Ray (Paid), Toolbag (Paid) and RenderMan (Free Personal).
Pixie is an open source RenderMan renderer for generating photorealistic images. You can compile Pixie on Windows (using Visual Studio 2005), Linux and on OSX (using XCode or unix style configure script).
Thea Render is a state-of-the-art biased/unbiased renderer with a rich set of innovative features, a powerful material system and its own advanced studio, all-in-one. Plugins are available for 3dsMax, Blender, Cinema4D, Rhino, SketchUp and SoftImage.
YafaRay is a free open-source montecarlo raytracing engine released under the LGPL 2.1 license. Raytracing is a rendering technique for generating realistic images by tracing the path of light through a 3D scene.
Boxshot comes with 50+ built-in shapes than can be decorated with artwork, resized, configured and composed to make a perfect scene that you can then render so realistically that customers may think they are seeing a photo of the actual product.
NOX Renderer is a rendering software based on unbiased methods. The renderer is available as a standalone Windows executable with a plug-in to link it to 3ds Max. A linking script is also available for Blender users.