There is no prominent, standalone shader pack officially named "Derivative Shaders" in the Minecraft community. Instead, this term typically refers to two things:
You can find the official free download for Derivative Shaders on community platforms: : Available as a high-quality shader download on the Modrinth Derivative Shader page Texture-Packs.com derivative shaders download free
How to Download Derivative Shaders for Free There is no prominent, standalone shader pack officially
Since these files are user-generated, you must be careful. There is no prominent
Downloading Derivative Shaders for free is easier than you might think, thanks to the generosity of the developer community. Here are a few sources where you can find high-quality Derivative Shaders: