Site Analysis/Rank Tracking Tools
SEO Powersuite (Limited free version available) – This has a huge range of uses and includes a few pieces of software. You get RankTracker (the best rank tracking software imo), Website Auditor (great for checking onsite issues), SEO Spyglass (download competitor backlinks) and LinkAssistant (finding link opportunities, I use it in a radical way to find guest posting opportunities). It is an essential suite of SEO tools that everyone should have in their arsenal. ( YES )
Screaming Frog SEO Spider (Limited free version available) – I tried to use this to diagnose onsite issues and while it is well featured it just doesn’t compare to Website Auditor from the SEO Powersuite. There is a free version of Screaming Frog SEO Spider for you to try.( NO )
SEScout – Looks great on the tin but it is truly awful. Inaccurate rankings, long periods of maintenance where you can do anything, really poor support and I mean really poor they should win an award for it. Avoid at all costs. ( NO )