Kdenlive

Kdenlive is a free and open-source video editing software application for Linux, macOS, and Windows. It is a multi-track editor that supports unlimited video and audio tracks, as well as a wide range of effects and transitions. Kdenlive is also able to export to a variety of formats, including DVD, Blu-ray, and WebM.

Here are some of the features of Kdenlive:

* Multi-track editing with unlimited video and audio tracks
* Wide range of effects and transitions
* Support for a variety of input and output formats
* Configurable keyboard shortcuts and interface layouts
* Ability to add custom effects and transitions
* Ability to render in the background
* Support for compositing with Natron or Blender

Kdenlive is a powerful and versatile video editing software that is available for free. It is a good choice for both beginners and experienced users.