1) Download the file homolonto.jar

2) Run homolonto:
- Unix and Linux users (in command line)
    java -jar homolonto.jar

- Mac OS X users
    double-click on the file homolonto.jar
    or
    java -jar homolonto.jar

- Windows users
    double-click on the file homolonto.jar


You can find ontologies to align at
http://www.obofoundry.org/

