INTLGRAPH Definitely Alpha ware. Interface shows promise. Ease of use should be good when finished.
The tools are very individualistic: to work with each object requires you to switch tools to do anything. One tool to move objects; one tool to resize; one tool to connect objects; one tool to disconnect objects, etc.
Modern software combines several work modes into one tool. This is what people are used to.
Keep working on it. It may become very useful.
(Version 1.0b2)