Free Chrome Extension Tools

Chrome extension shows sales rank while searching/sourcing on Amazon FREE

https://chrome.google.com/webstore/detail/ds-amazon-quick-view/jkompbllimaoekaogchhkmkdogpkhojg?hl=en%E2%80%9D

Chrome extension shows estimated monthly sales/daily sales more info like above FREE

https://chrome.google.com/webstore/detail/fba-calculator-for-amazon/bkdkbhjcfhfkmkbffkdklaiepfbllbgg

Chrome extension shows stock counter for Amazon Sellers FREE

https://chrome.google.com/webstore/detail/online-seller-addon/cmjihoeplpkmlmbbiiognkceoechmand