Ask HN: How do I build a mockup web app?

[Hexarcos]

How are services like myBalsamiq (web version of Balsamiq) built ? Is there a set of tools for this kind of drag and drop prototyping and wire-framing? Or it just rely heavily on javascript.

[tfitzgerald]

Having never used myBalsamiq, I'm not sure what they built it in, but some of the tools you could use:

Flash, jQuery, ExtJS, HTML5

Isn't their desktop app built in Adobe Air? or have they moved away from that? I haven't used it in a while.

[keiferski]

I've always used Mockingbird. http://www.gomockingbird.com

[Hexarcos]

Keiferski, I'm actually asking how to build something like that Mockingbird. But thanks, I didnt know that one.