VisualGST is an IDE (Integrated Development Environment) for the GNU Smalltalk (http://smalltalk.gnu.org/).
There are many tools for this IDE :

* Transcript
* Workspace
* Browser
* Finder
* Inspector
* Implementors
* Senders
* WebKit.

To install it with GNU Smalltalk

git clone git://git.sv.gnu.org/smalltalk.git
autoreconf -vi
./configure
make
make install