Bye, Adobe After Effects

Friction

Friction is a floss, powerful and versatile motion graphics application to create vector and raster animations.

It’s available for Windows and Linux.

Blender

Blender is a professional suite of tools for doing 3D and 2D animations, visual effects, compositing and video editing.

It has been used extensively to create many excellent free short films such as “Spring” (2018), “Sintel” (2010) and “Glass Half” (2015). It’s also widely used commercially, for example on the Netflix feature film Next Gen (2018).

It’s available for Windows, Mac and Linux from the official site.

Glaxnimate

Glaxnimate is a floss vector and raster graphics animation program, e.g. for creating/editing Lottie animations and Telegram stickers. The program can be integrated into the video editor Kdenlive for animation support.

It’s available for Windows, macOS, Linux and in early-stage for Android.