This document provides a list of zero-cost marketing tools for content creation, task management, video, photos, email marketing, and social media platforms like Facebook and Instagram that can provide a high return on investment. The tools include Asana, Trello, Google Docs, Dropbox, Medium, LinkedIn, Headline Analyzer, Facebook video, YouTube, IGTV, Videorama, Unsplash, Pixabay, Mailchimp, Hemingway App, Grammarly, Facebook Lists, Pages app, Insights, BeLive.TV, WordSwag, Canva, Boomerang, Storeo, and LinkTr.ee.