Download TreeConv from http://www.sfs.uni-tuebingen.de/~wmaier/treeconv/
- Run the jar from the terminal with
/System/Library/Frameworks/JavaVM.framework/Versions/1.6/Commands/java -jar treeconv-current.jar.
- Read the documentation here.
- Hopefully TIGER-XML format for input and output will be soon be available.
You have a choice of graphical interface and command line interface. Running the jar will give you the graphical interface. I don't know how to get the command line interface, but it appears to be in de.tuebingen.rparse.ui.CommandLineOptions.
The jar targets the 1.6 JVM, so on Mac OS, you'll need to specify it explicitly since 1.5 is the default; double-clicking the JAR will only give a useless error message.