Top 1. Apple iMovie
As all we know, iMovie comes with every new Mac (OS X) and you don't need to pay extra money for it. Apple’s latest iMovie 11 is a great and free video editor for the Mac with lots of great advanced features and add-onsand plug-in support, such as movie trailer, All-New Audio Editing, One-Step Effects, People Finder and so on. Unfortunately, the software is only free if you buy a new MAC system. If you want the software without buying the system, it is available for purchase.
Top 2. Blender
Blender is a free and open-source 3D computer graphics software product used for creating animated films, visual effects, interactive 3D applications or video games. Blender's features include 3D modeling, UV unwrapping, texturing, rigging and skinning, fluid and smoke simulation, particle, soft body simulation, animating, match moving, camera tracking, rendering, video editing and compositing. It also features a built-in game engine. All of you can find more features about the Blender video editing software from: http://www.blender.org/features-gallery/features/.
Top 3. ZS4 Video Editor
ZS4 Video Editor is video editing and compositing software which aims to provide media experts with a facility to combine a variety of media types (currently photos, videos and audio files) into one (or more) output file(s). It is one of the most used media editing software that allows users editing videos, audios and image files easily.
Top 4. Avidemux
Top 5. CineFX
There is clearly still a lot of work to be done but it’s nice to see a truly open source cross-platform stab at a market dominated by Adobe. There seem to be quite a few users hungry for a new version judging by the comments left on news items, which hopefully will spur developers to deliver the update sometime this year.
Okay, above is my collection for the Free Video Editing Software for Mac. Which one you are holding now? Show your ideas!