KML Multitool is a handy set of tools to process KML files for use with Google Earth, and GPS apps such as Handy GPS. It lets you:
* Convert waypoints and tracklogs between the GPX and KML file formats.
* Create rectangular or hexagonal KML grid cells that can be overlaid on Google Earth.
* Smooth KML tracklogs.
* Merge the waypoints and/or tracklogs from multiple KML files into a single file for easier handling.
* Plot and edit KML files.