Sticky Mod
Ride-along soft mod for quick deformation adjustments. Tested in Maya 2017+, but will likely work with earlier versions.

Rigging Helpers
Note: This collection contains tools at various levels of stability and annotation, created between 2014-2018 without the goal of public distribution. I think you'll get a lot of use from them, but there is always the possibility that some of them may not work in all versions of Maya, or for every situation. They will likely have compatibility issues with Maya 2022+.

Kayla-Bot | Free Maya Rig
Kayla-Bot is a free, simplified version of the Kayla Unlimited rig. It serves as an entry point for anyone looking to test drive before purchasing one of my premium rigs, or who just wants to animate a cute robot.

Kayla Unlimited includes non-robot appearances, a game engine-friendly version, lots of clothing and hair options, full textures, and more.

Kayla-Bot Features:
Customizable colors and proportions through presets and sliders
Real-time playback through parallel evaluation on modern machines
Intuitive, flexible controls
MG Picker support + Studio Library support + Character Sidekick tool
Supports Maya 2018+

Kayla Classic Rig (+ Kyle Mod)
Expressive facial rig
Built-in age slider
Real-time playback on most machines
IK/FK matching
Swappable Arnold shaders
Includes full picker (requires MG Picker)
Includes free male mod, Kyle
Supports Maya 2012+

Bonnie Classic Rig

AnimPolish BASIC
AnimPolish as a collection of deformation tools designed to push rigs and cloth/hair simulations past their limits. They are artist-friendly for animation, yet powerful enough for technically-minded simulation artists.

Create smears and push poses with SCULPT POSE
Lock down pesky verts with WRAP ++
Kill jitters with SUBDUE
Fix cloth penetrations with GROW/SHRINK Smooth lumps and folds with IRON
Utilize a full Alembic pipeline with CACHING
Polish your shots with over 12 professional-grade shot finaling tools
No plug-ins means install anywhere in seconds