Lightworks is an Academy and Emmy award-winning professional-grade video editor with over 20 years of history in the film and broadcast industry, and it is made free to you, and open sourced soon. Having cut hundreds of films such as Pulp Fiction, The Departed, Centurion and Shutter Island, it includes a full feature set of editorial tools — from advanced trimming and media management, to stereoscopic support and realtime effects including multiple secondary colour correctors. Lightworks has an advanced effects pipeline, utilizing the power of your GPU. And with support for up to 2K workflows with realtime effects, it is the most advanced editing application available.
Check out Lightworks, currently available only on Windows but Linux and Mac OS coming up soon.