You might have heard it said before, but SEO is not a do-it- once-and- forget-about-it type of deal. SEO is an ongoing, ever-evolving marketing strategy that needs consistent upkeep. That’s precisely why so many businesses look to SEO agencies for assistance. The practice itself is not terribly hard, but maintaining it can be extremely costly. As an independent webmaster, you don’t want to be spending too much money out of pocket for your SEO—especially when there are free services around! With these great online tools, you will receive the SEO assistance you need without paying a dime. SEMrush SEMrush is a comparative SEO analyser that gives you some pretty detailed insights on a website’s organic searches, paid searches, backlinks, displayed advertising performance, keywords, and competing websites. The best part about SEMrush is that it allows you to compare websites back to back, so you’ll get to monitor your competition closely. OpenLinkprofiler Although SEMrush gives you an overview of your backlinks, we find that OpenLinkprofiler does a more thorough job at analyzing your backlinks. You can also use this tool to analyze your competitor’s backlinks to see which authority websites might want to link to you. Google Keyword Planner With this keyword planner, you can get ideas on which keywords you want to rank for based on its average monthly searches, competition, and PPC prices. We use Google Keyword Planner often to check the performance of certain keywords. MOZ Keyword Explorer SEO Marketing hub MOZ created a free keyword research tool similar to Google Keyword Planner. The highlight of this tool is that you don’t have to sign up for a preceding service (like AdWords) in order to use it. However, if you don’t mind signing up for AdWords, we recommend Keyword Planner for its comprehensive look on potential keywords and their competitiveness. SEOCentro Centro is an analyzer tool that will give you a critical look on your current SEO status. Rather than focusing on one specific aspect, this website allows you to see the entire picture, including its overall content score, social media shares, title relevancy, description length, and an abundance of other valuable insights. Google Webmaster Tools This is the holy grail of all free tools. From near-perfect backlink tracking to page crawling stimulation, Google gives this free gift to all webmasters who want to improve their SEO content. This free tool gives you a major advantage in the competitive field of SEO marketing. With these six wonderful tools on your side, we have no doubt your leads will increase. Do you have a favorite free tool that works for you? If so, feel free to share it in the comments below!