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Synfig Studio

Synfig Studio is a free, open-source 2D animation package that lets artists create vector-based animation without drawing every frame by hand. It uses tweening between keyframes across 50+ layer types (geometric shapes, gradients, filters, distortions, and fractals), and includes a full bone-based skeletal system for cutout-style character animation. Released under the GNU GPL v3 license, Synfig aims to give hobbyists and small studios an 'industrial-strength' animation tool without the licensing cost of commercial motion graphics software. It supports advanced parameter linking through mathematical expressions and mixes bitmap and vector artwork in the same scene, running on Windows, macOS, and Linux.

Cavalry

Cavalry is a motion design application built for real-time animation, letting designers see rendered results instantly rather than waiting on preview renders. It is used by individual motion designers and studios for rigging, procedural animation, and data-driven graphics, and is now owned and distributed by Canva.

Moho

Moho is professional 2D animation software focused on drawing, rigging, and animating characters efficiently. It combines vector drawing tools optimized for animation with an advanced 2D rigging system supporting forward and inverse kinematics, letting animators reuse rigged characters across scenes instead of redrawing frame by frame. The software is sold under a perpetual licensing model with no required subscription, and is offered in two editions: Moho Pro for professionals and Moho Debut for hobbyists and first-time animators. It supports physics simulation, distortion meshes, a graph editor for precise timing control, and exports to game engines including Unreal, Unity, and Godot as well as Blender.