Directory submission remains an underrated yet highly effective technique for building backlinks and enhancing SEO. In this guide, we present a handpicked list of free directory submission sites for 2025, including Moz, HubSpot Directory, and Business.com. These platforms not only improve your website’s authority but also connect you with a larger audience. Learn the step-by-step process of creating high-quality submissions that follow SEO best practices. Whether you’re a small business owner or a digital marketer, these free directories are a must-try for your 2023 marketing strategy.