Greasy Fork is available in English.
Display ASIN after product links in Amazon.com search results, and after the title on a product page; plus, the dash is a short product link. Note that Amazon often uses AJAX to change search page content without reloading the new URL, in which case you won't see this script's ASINs on the new results; simply hit Refresh/F5 when this happens, and then the ASINs should appear.
