Sticky Mod is a free deformation tool made by fRigging Awesome studio that allows you to easily move the geometry of a model. Very useful for polishing animations.
Metahuman Animator
Metahuman Animator is Unreal Engine’s solution for quickly capturing facial performances using only an iPhone and PC and is available now.
Epic Pen
Epic Pen allows you to draw directly onto your screen, making it perfect for leaving drawovers, notes and visual feedback on animations
Animation Paper – Pre Release
The Animation Paper – Pre Release is now available. Currently in Alpha but check it out, download it and give feedback
MocapX
MocapX is a Facial motion capture app for the iPhone that streams the mocap data to Maya in real-time
FlipaClip
FlipaClip is an animation app for android and iOS that has a simple UI. Free and Paid versions can be downloaded from the Play Store and App Store.
Advanced Skeleton
Advanced Skeleton has been used to rig creatures, props, vehicles and just about anything since 1999. It is free to download but if you want to use it for a commercial project you will have to buy a license.
The Setup Machine
The Setup Machine enables Maya users to easily and quickly rig a wide variety of CG characters with just a few clicks. Generate a flexible, modern character rig in minutes saving you days or weeks of work