Shotcut is an open-source video editor that works across Windows, macOS and Linux. It's simple to use than most, includes support for a wide range of formats and resolutions up to 4K.
VSDC Free Video Editor lets you create and edit videos with visual and audio effects. Its non-linear editor lets you to place objects at random positions on the timeline and supports all popular video formats.
With over 50 visual effects and an easy-to-use interface, VideoPad Video Editor lets you create pro-quality videos in an optimized format for any playback device. It is free for non-commercial use and it won't watermark your projects.
DaVinci Resolve is a complete solution for video editing, color correction, and audio post production with a fully featured free version available to download for Windows, Mac and Linux.