rmKitUV is a Blender add-on that collects a set of tools for manipulating UV maps and editing UV layouts. Its transform tools scale, rotate, flip, and fit UV selections, and a Falloff UV Transform handles smooth, gradient-based transformations.
For island work, rmKitUV can scale UV islands relative to each other or to material sizes and normalize texel density for consistent texture resolution across a model. It also offers world-space projection for planar mapping and alignment of UVs to grids or bounding boxes. Hotspot utilities let you save, reference, and match UV hotspots.
Interactive features include modal operators for real-time transformations and pie menus for quick directional transformations. The add-on adds dedicated UI panels in both the UV Editor and 3D View, along with customizable keymaps and preferences. Version 2.0.0 converted all actions to Blender 5.0's UV element selection API calls and requires Blender 5.0 or higher. rmKitUV is distributed under the GNU General Public License v3.0 or later.