Introduction of light works

Lightworks is a professional non-linear editing system (NLE) for editing and mastering digital video in various formats, including 2K and 4K resolutions, and television in PAL, NTSC, and high-definition formats Lightworks has millions of adoptors worldwide due to the software being available across three platforms in Windows,Mac and Linux.....

The program is currently available for Windows, Linux and Mac OS. The development of an open source version was announced in May 2010 No source code of the programme has yet been released.
Light works Requirment:
Here are the Recommended System Specs

Intel i7 chipset or faster, fast AMD chipset
3GB RAM or higher
Two high-resolution displays (1920 x1080) or above
PCI Express graphics card (NVIDIA or ATI) with 1GB or higher and support for DirectX 9 (Windows only)
Separate media and system drives (these can be internal or external as long as the the interface is suitably fast
Compatible sound card
200MB Disk space for Lightworks installation

Some are using a i5 CPU with Lightworks and you don't need two displays. However, less powerful machines are going to run into difficulies editing highly compressed codecs.
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Hope you learn something from it .