jTBtar is a simple, user-friendly and multi-platform application to pack/unpack atlases and maps into tar format for the TrekBuddy GPS navigation software.
jTBtar was developed on Java 6. You can download JRE from Sun's website . It might work under JRE 1.5 but I didn't test it. Tar executable is not required.
Simply extract the distribution archive into a folder and double-click on jtbtar.jar . If you prefer the command line, type:
java -jar jtbtar.jar
You can download the latest version here
jTBtar is released under the GNU Public License, version 3