We have discussed these desktop applications and tools in detail in this post above. So, check out. Now, if you want to convert data from KML files to Excel or CSV format, this post will help you out.

KML files are “Keyhole Markup Language” files which contain geographic information for display in software such as Google Earth and within Google Maps.

Google Earth users can now search publicly available Keyhole Markup Language ( KML ) data files, also known as map layers.To see the search in action ...

KML is a text format, so you can open it with a text editor to delete the points you don't want if you know the lat/long or time stamp of the ones you want to delete. I've also used GPSbabel to ...