Glaxnimate

Glaxnimate is a free and open-source, cross-platform, 2D vector animation software.

It has been integrated into Shotcut and Kdenlive  to add vector capabilities to video editors.

Supported formats
Glaxnimate saves animations using a custom JSON-based format, but it also supports loading and saving animated SVG, Lottie, Android Vector Drawables, and After Effects Project files (.aep).

It can also render to video using FFmpeg, WebP, and GIF.

It can import and render to a variety of raster image formats.

Graphics

 * Gradients
 * Bézier curves
 * Image tracing
 * Masking
 * Text

Animation

 * Tweening
 * Precompositions
 * Animation along path