The OO-Browser is an advanced object-oriented class browser with
support for browsing C, C++, Common Lisp and its Object System
(CLOS), Eiffel, Java, Objective-C, Python and Smalltalk. It runs
atop Emacs/XEmacs on Linux, UNIX and Windows.
InfoDock is an integrated productivity toolset, mainly aimed at technical
people. It is built atop XEmacs and so has all of the power of Emacs, but with an extended menu-based user interface. Most objections to Emacs use are solved by use of InfoDock.