MagicaVoxel comes back with the Intel Denoiser integrated! ;)

Intel Open Image Denoiser [0.99.4.2]
Requirement: 64bit system, 4GB memory
Installation: download plugin.zip and extract the content to the program folder. (menu Win64 or MacOs plugin) https://ephtracy.github.io
Image->Filter->Denoise: denoise rendered images in the preview mode. use mouse wheel to zoom in/out, left-drag to move image.
Image->MRT: render additional albedo and normal images to help the denoiser to preserve details. note that it does not always improve the quality.
Sample->Bounce->Clamp: clamp energy to reduce noises.
Image based Lighting [0.99.4.1]
Sky->IBL: Image Based Lighting. use ".hdr" format panorama images to light the scene.
Fog: add Equi-angular sampling back to reduce noises. support fogs in othogonal views in a bounding volume.
Media: enable Sample->TR-Shadow to allow single direct lighting; enable Sample->MIS-Cloud to allow multiple direct lighting (very expensive).
Color all color options have their own color pickers which support HSV, RGB, H-Block and Hex values.
Palette Menu right click the palette view to show the pop-up menu.

https://twitter.com/i/status/1169292160400875526