Pymacs is a powerful tool which, once started from Emacs, allows both-way communication between Emacs Lisp and Python. Pymacs in intended for using Python as an extension language for Emacs rather than the other way around, and this asymmetry is reflected in some design choices. Within Emacs Lisp code, one may load and use Python modules. Python functions may themselves use Emacs services and handle Emacs Lisp objects kept in Emacs Lisp space.
JOrtho is a spell checker for Java. The library works with any JTextComponent from the Swing framework and checks as you type. The dictionary is based on the free Wiktionary.org, and is applicable for multiple languages. You can select the spell checking language via a context menu. The Features of JOrtho are the highlighting of potentially wrongly spelled words, a context menu with suggestions for correct forms of the word, and a context menu with option to change the checking language. At the moment there are nine languages for spell checking available: English, German, French, Spanish, Italian, Russian, Polish, Dutch, and Arabic.