Searching multiple mupplier sites that have a secure login

I have a number of suppliers that I can login to their sites which I search and purchase products. It is very time consuming searching each site for one product. Is there a program or software that will search all my sites give me results for each site? I did try Google custom search but it will not search the DB on each site behind the login.  
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Kshitij AhujaTechnology DeveloperCommented:
Since your access is restricted by login i doubt you will achieve that without having a custom development. This is because Google bot will never be allowed to access the restricted pages. So it wont find those products for you.

If the pages you search are available to the search engines, or say are not password protected (i mean there must be some general, unrestricted version as well), then you can probably search it using Google.
Or even better is a search engines like This site will ask you a list of sites you want to search for a keyword (that can be the product name) and give you pages from those sites that contain that keyword.


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