Graphical GUI for Graphviz on Mac?

I installed the Graphviz GUI from pixelglow.com, but it appears to only be a viewer for .dot Graphviz files. I am looking for a graphical editor, where I can create diagrams by pointing and clicking--just like the iPhone app Instaviz.

I would rather not code graphs by hand.

Does anyone know of anything--preferably free?

I assume you mean pixelglow.com which is a nice implementation of graphviz, I believe it includes dotty. If dot writing isn't actually a requirement you might check out the following:

Omnigraffle is by far the best app on the Mac for making graphs but it cannot export back to dot, and is not free (but does have a 20 object free limitation).

Gliffy is also nice (webapp).

You can also try getting Dia from fink but YMMV

Graphviz comes with dotty. It's not included in the Mac Version?

What you need is graphviz-visual-editor:

git clone https://github.com/magjac/graphviz-visual-editor
cd graphviz-visual-editor
npm install
make
npm run start