Interesting question. I haven't tried any free editing software other than windows movie maker / iMovie but there probably is. This program MP4Cam2AVI - MPEG4/MJPEG to .AVI converter/joiner for digital cameras will let you convert the . Mov to . Avi so that you can use windows movie maker. If you don't want to convert then you could try this Avidemux - Downloads i haven't used it though so it may not like .mov but it is the only free editor that I would trust other than the two above. If either of these don't work, you can try buying a cheap video capture card. I know you don't need it but you can get them for less than $20 and many come with more powerful video editing software such as pinnacle etc. I know it isn't free but buying the same software could cost a couple of hundred yet it is less than 20 in with the capture card. You might get lucky and make a profit on the card on eBay!

Ps sorry for the formatting and lack of hyperlinks. It is kinda hard to do on holidays with an iPhone. The other thing to watch is that many computers are very sluggish when editing hd. Especially the cheap / free software as it often isn't so economical with its use of ram.