Coverage of Tools, editors and IDE's that support Jython or at least Python to some degree or another. Some of these may have better support for Jython then others. As with most things YMMV and all of these can be tried for free.
Please dont hesitate if you have anything to add to this list. Thanks
PyCharm - is an IDE (Integrated Development Environment) built on top of the IntelliJ Platform and tailored for Python development.
Python Editors from the Python Wiki
Pydev - If you use Eclipse, Pydev is awesome.
npython - Netbeans support. for those of us that detest Eclipse.
Komodo IDE - ActiveState's Python IDE (commercial)
jHepWork - Jython IDE with integrated Jython shell.
jEdit - jEdit is a programmer's text editor which has a many plugins
Python Monkey - adds support for Python language to the Eclipse Monkey plugin, using Jython.
Ok, so these are a bit more advanced then is needed here but...its the general idea.