Looks very promising:

Flowblade Movie Editor is a multitrack non-linear video editor for Linux released under GPL 3 license.
Flowblade is designed to provide a fast, precise and as-simple-as-possible editing experience.
Flowblade employs film style editing paradigm in which clips are usually automatically placed tightly after the previous clip - or between two existing clips - when they are inserted on the timeline. Edits are fine tuned by trimming in and out points of clips, or by cutting and deleting parts of clips. Film style editing is faster for creating programs with mostly straight cuts and audio splits, but may be slower when programs contain complex composites unless correct work flow is followed.
Flowblade provides powerful tools to mix and filter video and audio.

Flowblade Movie Editor

https://vimeo.com/40929685