Does now web development start to move into the browser ?

The browser has always been the most common tool to consume content from the internet. It also has served to create simple text based content (CMS). But now the tools start to appear for creating more complex content like web applications direclty in the browser. Let me list what I have tried out (or just heard of) recently.

• bespin the super-cool and wicked-fast browser code editor (which since today contains a few lines of code I have contributed)
  
• 280atlas, just been announced yesterday, an amazingly awesome looking visual builder for cappccino web apps, not available yet, except of the screencast.
• Wavemaker, they have been around for a while, very enterprisy, it did not work for my out of the box when I tried a few months ago (isn't the first impression what counts most ?).
• AmyEditor. Looks like an online version of TextMate. That is good, because TextMate looks and feels great and people just love TextMate, but is bad because I believe the browser is not the right place for embedding a desktop app alike. And when resizing the browser, that app did not resize, so that was the early ending of my exploration of that otherwise probably great app.
• Coghead. Was a cloudbased visual app builder. They failed, are on the deadpool now. At least they could sell some of their IP to SAP. AFAIK, Coghead was not open source, halfway flash based and had a lot of proprietary things, even a proprietary programming language. Maybe that is not the way to go, unless you have more salesmen than developers in the team.
  

Beside of bespin these web apps all seem to look like desktop apps. I am not sure whether this is what developers will feel most comfortable with. Look at gmail, greader and other highly successful web apps. They don't look like and feel like desktop apps.

There are also cool graphics apps from aviary, for creating artwork. They are flash based and take more time to load than Pixelmator on my laptop.