These 21 online marketing tools make your life easier and grow your website. Best of all, they are free. Most have paid options but you can do a lot of great things with each free option. The list does not cover what tools are out there or what you could use. We at Digital Darts use every tool recommended here and highly suggest you do too. From coming up with content, managing social media, tracking results, and improving SEO, use these marketing tools to increase leads and sales.