Picker Builder   Before purchase this is a limited version. You can build pickers 5 times.

Picker Viewer   It is free ! (for animators) You can edit an already existing picker in it.

support Maya versions: 2014-2022
How to install:  Unzip and drag and drop the install.mel file into Maya viewport.

Or download installer from Autodesk:
After installation, restart the Maya and Picker Builder will appear on the menu

Examples:

Load rig as reference and press on shelf.   Pickers are already included in the Picker Builder

Leopard

Rig by: Truong
Rig: download

Mery

Rig: download