JGPSTrackEdit
GPS track editor for editing tracks and planning (multiple) day tours
...JGPSTrackEdit is written in the java language. To run the software, a java runtime installation is required (may be obtained from https://www.java.com/de/download/ or https://openjdk.java.net/projects/jdk8/ or https://adoptopenjdk.net/)
More information, including the user manual, may be found on the wiki pages (https://sourceforge.net/p/jgpst