Kdenlive

Kdenlive is a powerful multi-track video editor built on the MLT framework. Timeline editing, keyframeable effects, color scopes, proxy editing for 4K, and support for virtually every format. The interface is intuitive and the feature set rivals paid editors. Cross-platform and completely free. Unlike DaVinci Resolve, it's fully open-source and runs well on Linux. Ideal for creators who want professional video editing without proprietary software.