Three great tools for backlink analysis have been constantly improving over the last few years. Open Site Explorer from SEOmoz, Ahrefs and Majestic SEO each have features that set them apart.
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This infographic went through many revisions, as the three services are always updating and innovating. Some aspects are also hard to compare from one service to another. What we’ve tried to capture here is a general overview of fairly central aspects. Other people have done some detailed analysis and discussion along the same lines. At the end of the day, it is best to spend time working with each of these tools to see which works best for your purposes.
While we’re on the topic of SEO, I wanted to mention Ahrefs. Ahrefs is a tool that allows you to do keyword research to ensure you’re targeting the best keywords with the highest traffic and lowest difficulty to rank for.
While this tool isn’t free or cheap, they do offer a free two-week trial. Alternatively, you can use their competitors like Moz or SEMrush (who also have free trials, hint hint). Whichever one you choose, if you’re serious about ranking on Google, I highly recommend a keyword research tool. Without them, you only have access to Google Keyword Planner, which doesn’t really help you find the right keywords.