The first application is called GE-Path and as you might guess allows you to draw paths and save them as KML files for sharing with other GE – Google Earth users. But, this application also lets you draw polygons, calculate areas, measure distances, and he has added a number of export options such as Excel, and comma delimited text files. The paths (or polygons) are created by placing placemarks in GE and then importing the resulting KML into GE-Path.
The second application, GE-Graph similarly allows you to put data in placemarks and it will create bar graphs. You can set graph values, colors, scales, and labels. It also supports importing and exporting options.
To download these two applications go the the web site which has more details and screenshots. You can see an example KML of GE-Graph 
About Frank Taylor
Frank Taylor started the Google Earth Blog in July, 2005 shortly after Google Earth was first released. He has worked with 3D computer graphics and VR for many years and was very impressed with this exciting product. Frank completed a 5.5 year circumnavigation of the earth by sailboat in June 2015 which you can read about at Tahina Expedition, and is a licensed pilot, backpacker, diver, and photographer.