You don't need an app of any kind. Just connect your phone via microUSB cable and select 'Memory Card Access' from the pulldown USB connection options.
Then you can use your PC to browse your phone. Open the directory called 'dcim' and then open the subfolder called 'camera' and you'll find your videos there. They will be .3gp files.
If you want to edit them, I know Adobe Premiere handles .3gp files well... I'm sure other editing programs do too. Have fun!