There is a boggle server by Adam Horner in java at
http://www.doc.ic.ac.uk/~gah2/source/
but the files have no world read permission.

The class files are in http://www.doc.ic.ac.uk/~gah2/java/boggle/
and the java sources here (*.jad) are decompiled from the class files
using Jad from http://www.geocities.com/SiliconValley/Bridge/8617/jad.html

You should not assume that decompiled sources can be used to build a
working program; they are here only to allow you to study the methods
used in this code to help you write your own programs.

See also:
http://www.doc.ic.ac.uk/~ids/dotdot/misc/projects/Boggle/adam/general.mail