Program for marketplace research

I need a small software or something like Chrome extension that will have the following features. Every marketplace works based on keyword search. When you search for a keyword, will return several pages with results. I want the software to have as input a list of keywords (large list, more than 1 million keywords) and to return a list with every keyword and the number of search results from that marketplace. The results should be able to import in Excel so I can sort the data.