For whatever reason, many of the editors mentioned here never worked for me … like OpenShot, ShotCut or PiTiVi were really unstable the last time I tried (might be a distro or DE thing). Also I found it hard to cut precisely when they worked. Lightworks, Da Vinci, Cinelerra, I had a hard time getting them to run. Maybe that changed in the meantime.
I ultimately stuck with Kdenlive, which is stable enough and allows for reasonably precise cutting.