rock paper scissors lizard spock:

http://www.diagrammr.com/edit?key=diQvJMYgw8D

This was posted a while back:

http://news.ycombinator.com/item?id=992293

A very neat tool but I'm a little bummed out to see no new functionality in the 4 months since I looked at it last. I'll stick to my dot graph compiler for now :).

I know the guy who built this, he has a douchebag boss who makes him work long hours so he might not have had much time to devote recently...

For sequence diagrams I much prefer http://www.websequencediagrams.com/

Diagrammr could use some nicer looking styles. The different layouts and ability to reorder steps is quite nice though.

"Buffalo buffalo Buffalo buffalo buffalo buffalo Buffalo buffalo" didn't produce a very good diagram. :(

This is pretty cool. It would be nice to be able to edit your sentences.

I've just been spending a lot of time with graphviz lately so this is quite timely.

Surely uses graphviz on the backend.

Would be nice if it could also generate RDF for the graph as well.

No way to run an external GraphViz process in an AppEngine hosted app. Right?

GraphViz does rock, however. And, you are right: it is very handy for visualizing RDF data (self plug: I had examples for this in my last Ruby book)

He mentions a convoluted design and calling out to Dot here, so yes, it's GraphViz doing the rendering:

http://kushalhisblog.blogspot.com/2009/08/diagrammr.html

Well, there's always Canviz: http://code.google.com/p/canviz/

I second that thanks - looks very useful.

Hey, this is REALLY neat! Thank you.

When you delete all sequences in a diagram, browser renders a broken image. But I like the idea!

I wonder if this will help me make my way through a Raymond Smullyan book.