UV Tools is a collection of UV mapping utilities for 3ds Max from developer NiK684. It's described as easy to use and geared toward Archviz work and not only. The plugin runs on 3ds Max 2013 and later, and it ranks 62 on ScriptSpot.
The toolset spans a range of UV editing tasks. Checker materials can be assigned per object, and by default each assignment creates a unique material so they can be controlled independently; disabling that option creates a single material per checker assignment, which lets the viewport redraw much faster when many objects are involved. Align functions support Ctrl+Click to align elements by subselection and Shift+Click to align to 0. Other tools include a reworked Randomizer, distributing elements along a specific axis, fitting a selection's height or width to a tile, and texel density controls such as setting TD from a custom point.
The current release is version 3.4.01, last updated on 2026-06-23. UV Tools is listed as free in this catalog; check the developer's page for current licensing. A demo video is available.