Have about 10k URLs categorized in different CSV files by industry -------- Goal is to find the top 5-10 keywords on each site, for each industry specific csv file and relevant URLs inside, in the most efficient way possible/bulk upload ---------- looking for site recommendations...

In all for this task I have about 30 individual CSV files with varying number of URLs (all companies) on each. Each CSV is an Industry (so the URLs inside that CSV file are all in the same industry)

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Ideal situation would be to upload each CSV to a program and find the common keywords by individual CSV (and being able to take out the words like 'the' 'and' etc, to doing anything else like that which can help me compare my individual files

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Site suggestions for this, from free to paid?

(thanks in advance for the help!)