Curve Library is a Great Way to Store and Use Control Curves in Maya Quickly.
Daniia Nigmatullina’s Curve Library script for Autodesk Maya, allows users to save and create custom curves for your rigging controls easily. The Maya script comes with some standard curve controls that are most common with rigging.
Choose a curve style and click the icon to make one in your Maya scene. The tool can make use of right-clicking to access more options. You can also create your custom curves and add them to the library with a click. The tool allows you to create a preview icon for the new control curves.
Curve Library costs $20, is simple, clean and well thought out and can be a handy addition to any rigger’s toolset.