I've been building UV Unfoldr, a UV editor for 3ds Max 2022–2027 with a fast, Maya-style workflow. It's in beta now and launching soon.

• Shift+click edge runs with live preview
• Straighten Shell and Alt+T / Alt+V edge constraints
• Unfold (U), Optimize (O) and paint-to-fix UV brushes
• Live 3D checker while you drag
• Find, stack and group similar islands, mirrored ones too
• Outline-aware packing that keeps stacks together
• Texel density, UV sets and UDIM tile labels
And much much more

It works on top of the standard Unwrap UVW modifier, so everything stays undoable and your scenes stay normal.

🔔 Get notified at launch (free): https://sargisstg.gumroad.com/l/uvunfoldr
💬 Feedback and beta testing: https://polycount.com/discussion/239265