Synfig is a free and open-source, industrial-strength, vector-based 2D animation app designed for producing feature-film animations. It eliminates the need to create animations frame by frame. It is available for Windows, Linux, and macOS.
Enve is a free and open-source 2D animation app. It can create both vector and raster animations and even use sound and video files. It has been created with flexibility and expandability in mind.
Create beautiful 2D motion graphics and vector animations for any platform in matter of minutes.
Rubber Hose is an After Effects tool for animation rigging. Connect layers from Illustrator and Photoshop into two new stretchy rigs – RubberPin and RubberRig. Style hoses unlike ever before. Major speed updates and key-frame baking let you work faster.This app doesn't have any features at the moment.
Duik is a comprehensive animation and rigging toolset for Adobe After Effects. It provides the main rigging tools, found in any 3D software, like IK, controllers, and bones, which you can use in any 3D software, but adapts them to 2D animation in After Effects.
Joystick controllers are commonly used in 3D character rigging for facial animation. With this tool, you simply set five consecutive keyframes to represent your origin, right, left, top, and bottom extremes.