Natron is a free and open source node-based conpositor for visual effects and motion graphics, similar in functionality to Adobe After Effects. It's available for Linux, macOS, Windows, and FreeBSD:

- Website: https://natrongithub.github.io

- Flathub: https://flathub.org/apps/details/fr.natron.Natron

- Source: https://github.com/NatronGitHub/Natron