I'm guessing you really mean video editing since video recorders come with their own software.
iMovie comes with Macs. Fiddled with it a few times and it's easy enough. In the *nix world there are many apps but I've never messed with any of them. In the M$ ecosystem M$ offers Movie Maker. Been a while but they put the file into a proprietary format which had no conversions at the time. There may be other apps in the M$ world.
Thanks. Movie Maker works perfect. Got it from the 2012 essentials pack. This is for a customer's laptop, but for myself I've been using iPhoto on my Mac.
It's not the best quality, but it allows me to record my guitar instrumental videos with alright playback.