The best free alternative to Live2D Cubism is Synfig Studio, which is also Open Source. If that doesn't suit you, our users have ranked more than 10 alternatives to Live2D Cubism and eight of them is free so hopefully you can find a suitable replacement. Other interesting free alternatives to Live2D Cubism are Inochi Creator, enve, AnimeEffects and Veadotube mini.
Open-source 2D software for creating animations with vector and bitmap artwork, advanced bone rigging, tweening, timeline editing, onion skinning, multi-layer effects, audio sync, and multi-format rendering on Windows, Linux, and macOS.
Inochi creator is a framework for realtime 2D puppet animation. On this site you can find the reference implementation as well as the official tooling for creating and using Inochi2D puppets for VTubing.
It offers a free open source alternative. This is especially good for those that cannot afford Live2D subscription and find the free version too limiting. Plus the usage license is not restrictive.
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.
AnimeEffects is a 2D keyframe animation tool based on deformation of polygon meshes. You can easily operate, quickly shape your idea, and remake at any time if you have changed your mind.
If all you need is a simple program that lets you switch between two images as you talk, then this program is for you!
E-mote is an engine which can create smooth and stereoscopic animation in a few steps from the character's 2D illustration. You can easily and dynamically move the expressions, orientations, limbs of standing pictures characters and make it look 3D.
Nijigenerate is an open source editor for the nijilive puppet format, which is derived from Inochi2D (v0.8) technology. This application allows you to rig models for use in games or for other real-time applications such as VTubing.
Trangram is a free one-stop platform to create, animate and share motion graphics.
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While it looks like serving similar purpose, both software targeted for different animation format with entirely different toolset.
Live2D is for 2D character rigging with realistic movement, used in interactive scenario. Synfig is more of vector-based animation.