Cycles Renderer - Cycles is Blender’s ray-trace based production render engine and in development since 2011.
RenderMan - Advanced Technology from Pixar Animation Studios for Rendering VFX and Animation
LuxCoreRender - LuxCoreRender is a physically based and unbiased rendering engine.
Adobe Dimension - Create high-quality, photorealistic images with the 3D tool made for graphic designers.
Indigo Renderer - Indigo Renderer is an unbiased, physically based and photorealistic renderer which simulates the physics of light to achieve near-perfect image realism.
Kerkythea - Kerkythea is a freeware software that can produce high quality renders without spending a cent on software licensing.