Toolkit for Conceptual Modeling (TCM)
a collection of graphical editors for different specification methods (generic,UML, Structured Analysis)
Two-Layered GUI Toolkit
The Two-Layered GUI Toolkit is a library of GUI helper classes which is designed in a way to simplify development of separate interchangeable front-ends.
Visualization Toolkit is an open source, freely available software system for 3D computer graphics, image processing, and visualization. VTK includes a textbook published by Prentice-Hall ( The Visualization Toolkit, An Object-Oriented Approach To 3D Graphics, 2nd edition" ISBN 0-13-954694-4 ), a C++ class library, and several interpreted interface layers including Tcl/Tk, Java, and Python.
an Internet client/server C++ library, with support for object threads, stream based socket I/O, a
multi-threaded server socket framework, a multi-process fault tolerant server framework and more
WinDriver USB Device-USB Firmware Development Toolkit
Complementary toolkit to WinDriver, WinDriver USB Device facilitates the development of Chapter 9 firmware for USB devices, including ready-made mass storage function driver for the implementation of standard storage devices.
Website META Language - a free HTML generation toolkit
a marriage of Python and wxWindows
a portable LGPL free C++ toolkit for loading, displaying and processing X3D models. The library comes with simple applications and many examples that enable the visualization and the edition of X3D models.
a Win95-looking GUI toolkit, it is Xlib-based and is written in C++
(commercial) XPCE is an object management system (storage and message-passing) which can have its methods defined in various languages.
a faster and small toolkit, designed to make easy the creation of C/C++ applications for any unix-like system, running the X Window System (version 11.4 or later), with the look and feel of NeXTSTEP
OpenLook[tm] compliant graphical user-interface toolkit