Chaos Corona Solo is a rendering plugin for Cinema 4D, developed by Chaos. It runs entirely on the CPU, with optional GPU AI denoising that requires a compatible GPU, and it supports both unbiased and biased rendering.
Chaos points to usability as Corona's most powerful feature, with render setup described as simple as pressing "Render." The renderer is used across architectural visualization, automotive and product design, and television ads and title sequences. The two commercially available versions work with 3ds Max and Cinema 4D.
Within the toolfarm library, Chaos Corona Solo sits at popularity rank 34. This entry is on version 2025.4.30, with recent maintenance arriving through Corona 15 Hotfix 1. Installation requires administrator privileges, and a demo video is available. It's listed as free here.