Here's a little gizmo that emulates the Flame Wash brush.
Despill gizmo based on background luminance and chroma with much more useful extra features.
Expand edge pixel color of a premult image. It works to remove both bright and dark edges
Chroma keyer to isolate for example skin colors
Nukes default Keyer with added functionality of masking off the key and keying on different colorspaces for a better luma-keying results.
A XOR based tool for adding grain to edges only.
This tool will help with Despill and edge blending with the background plate.
this gizmo will be helpful for comping hair and motion blur easily, see tutorial for better understanding https://youtu.be/L3YIZhatHbU
GW Happy Clamper Toolset (updated to 1.01 - changed from type: gizmo to group to increase compatibility) Simple Alpha Clamper and Difference Keyer with clamping controls.
Fast and reliable gizmo to isolate certain tones and color using hue