Is there a good framework available which makes it easy to build a web browser plugin (like the one from Delicious) with a single code base for the most popular PC/Mac web browsers like Internet Explorer, Firefox, Safari, Chrome? Any good tutorials?
I looked at them myself recently but was disappointed with their pricing scheme (http://www.webmynd.com/pricing.php). They actually charge $100-$850 per month not for development time but for the time that you allow new people to download your extension. This might work if the extensions are being built for an enterprise, but seems impractical for creating free extensions.
