This document lists and describes 16 free digital marketing tools that can be used, including Google Analytics to track website traffic, Google Search Console to check indexing status and optimize visibility, UberSuggest for domain overview and content ideas, SEOreviewtools to extract backlinks, Grammarly to write grammatically correct sentences, Canva to design online using drag-and-drop features, and Mailchimp for email marketing. It ends by asking what other tools should be added to the list.