Origin Box is a Blender add-on from 3DPRS that adds a custom panel to the 3D Viewport Sidebar for working with object origins. It lets you adjust origins in real time using sliders for the X, Y, and Z axes, and a quick popup menu opens the origin tools with Ctrl+O.
The add-on covers common origin operations directly: apply origin changes with one click, center an object's origin, and drop objects to the floor to place them on the ground. It works in both world and local modes, so you can operate using global or local transforms, and multi-object support lets you edit origins and drop several objects at once.
Shortcuts are configurable in the add-on preferences, so you can set your own hotkeys. Origin Box is listed as a Blender Extension and is compatible with Blender 4.0 through 5.1, released under the GPL license. A demo video is available.