But at the same time, this is a completely new software created from scratch.
The idea behind the software dates back to 2006 - the first free material manager written with MaxScript (only had a few free material libraries). The history of the commercial plugin started in 2009 (C# and MaxScript).
Currently - written in C# / C++ and has thousands of material presets, fast and easy material manager, material lab to test your materials.

Extra information
Preinstalled Materials
Hundreds of high quality materials in prebuilt libraries for each render engine supported (Pro and Studio versions). High quality and resolution texture maps (4K and above).

Well Organized
For a faster and more efficient way to view content presets, the XSMP Pre-built Library Manager has convenient features for displaying all content contained in categories and subcategories.

Integration
XSMP is integrated directly into 3ds Max and therefore does not require additional modules to communicate with the host software. Manage your materials right in the 3D app.

Ability to organize your material library
Manage your materials in an unlimited number of libraries. Create virtual categories and folders of any hierarchical depth.

Multiple Previews
Create your own previews and import additional preview images (up to 3) into the Material Browser. Images can be enlarged for better viewing.

Easy search
Filter / search by various criteria (material type, title, description ...) and real-time search by simply entering text in the search field.