Question: Does anyone know what frameworks they are using to create these or are they doing all of these in house?

Thanks

Answer: 
They're all done in Flash
Here's the answer on Quora from the guy who created them:

<http://www.quora.com/Jason-Putorti/What-charting-library-framework-did-you-use-at-Mint-com>

> 
> I actually wrote the first version of
>  the trends tab in Flex
>  (http://www.adobe.com/products/flex/)
>  using the Flex Charting Components
>  (http://livedocs.adobe.com/flex/3...).
>  Flex is very easy to learn and develop
>  in and I feel is much easier to
>  maintain than a
>  Flash/ActionScript-only solution
> 
> 
>