YT Real Measure (Set & measure a mesh size directly in Zbrush with real-world scale, Zbrush plugin)

YT Sub Tool Selector, that selects a Zbrush sub tool for sure

V Buttons Manager (Copy and paste visible state from/to V1 and V8 buttons of Zbrush)

YT Symmetrizer (Plugin for Zbrush)

Z Intensity Controller (Zbrush Plugin)

Palette Knife for Sculptris Pro

Curve Knife for Sculptris Pro

Zbrush Tool Cleaner (Clean up Zbrush tools that tend to be messy)

Tool for saving thumbnail (It creates thumbnails automatically when saving files on Zbrush)