Engineers want to analyze a particular light source to better understand its brightness distribution, and they also want to use light sources to design new lighting systems. In this case, ProSource is one of the best tools to do this. It allows developers or designers to interact with the near-field data of light source in a variety of ways, allowing optical system designers to take full advantage of the Radiant Source Model (RSM) of light source and lighting system.

MagicaCSG (CSG = Constructive Solid Geometry) is a small, simple, and free 3d modeling software, developed by ephtracy (the creator of MagicaVoxel and Aerialod). It's essentially a lightweight signed distance field editor and path tracing renderer with modeling processes like dynamic subdivision surfaces and fast Boolean operations, which makes 3D modeling as simple, easy, fast and free as building blocks.

TracePro is the world's leading optical simulation software, mainly used for lighting system analysis, traditional optical analysis, radiation analysis and photometric analysis. It's based on the ACIS Solid Modeling Kernel, supports Monte Carlo path tracing method, CAD import/export and other functions, can solve almost all ray tracing problems.

HDR Light Studio is a functional, powerful and professional lighting software specially made for 3D artists to render 3D images, developed by Lightmap from United Kingdom. It is used to create and edit studio HDRI maps in real-time and improve the image quality, suitable for many 3D design programs.

Dragonframe (formerly called Dragon Stop Motion) is a fully-functional and professional stop-motion animation software for Windows, Mac and Linux platforms. It's specially designed for commercial, broadcast, television and film needs, has a wide range of applications, and is trusted by major film studios and independent film producers around the world.