The Python Tool Manager is a dialog containing a button for each running Python tool. It uses functionality in pyfbsdk_additions to listen for Python tools being created or destroyed and updates the buttons accordingly. To open the Tool Manager, click Tool Manager tool in the Python Editor. The Tool Manager script is itself a Python tool and is found in config\Python.
If you close the tool by using the X button in the right corner, use the Tool Manager to restart it.
You can write your own tool manager. See the ToolManager.py script for details.