Piggy Bank is a Firefox extension that turns your browser into a mashup
platform, by allowing you to extract data from different web sites and mix
them together.
Piggy Bank also allows you to store this extracted information locally for
you to search later and to exchange at need the collected information with
others.
http://simile.mit.edu/wiki/Solvent
Why do I need screen scrapers?
Piggy Bank needs web pages to embed information in a format that it can
understand. This format is called RDF (Resource Description Framework) and
its main advantage is that makes machine processing a lot easier.
Unfortunately, at these very early stages, not many web pages embed or link
to such "purer" RDF information. Piggy Bank, however, is capable of
executing a particular screen scraper on particular pages in order to
"extract" the information it needs.
In short, screen scrapers allow you to turn a regular web page into a
regular web page plus semantic data, and thus frees the data from the
page/site that contains it.
http://code.google.com/apis/ajaxfeeds/
What is the Google AJAX Feed API?
With the AJAX Feed API, you can download any public Atom or RSS feed using
only JavaScript, so you can easily mash up feeds with your content and
other APIs like the Google Maps API.
The Google AJAX Feed API takes the pain out of developing mashups in
JavaScript because you can now mash up feeds using only a few lines of
JavaScript, rather than dealing with complex server-side proxies. Making it
easy to quickly integrate feeds on your website, as shown below.
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