SheepIt Render Farm - A free distributed render farm for Blender
TurboRender - Rendering at your workstation?
RebusFarm - RebusFarm is a 3D rendering software.
SuperRenders Farm - SuperRendersFarm.COM is a CPU & GPU cloud render farm, supporting all 3D Render Engines: Arnold, Redshift, Octane, Vray, and more.
RenderStreet - Render farm for Blender and Modo
RealSpace 3D - 3D Rendering, Animation, and Application provider/developer