tk是一个结合tcl语言开发图形图像的脚本，如风河的Tornado就是用tcl＋tk开发的IDE。-tk is a combination of language development tcl scr ipt graphic images, such as wind River Tornado is to use tcl tk development IDE.

TOGL library is an OPENGL interface for using TCL/TK to access high 3D performance. It has been used in several cross platform commercial software.