The best things in life are free. Below are a number of SEO tools that any cost conscious business owner will appreciate.
Since google limited access to its keyword planner this is a very handy and useful google chrome plugin extension substitute. Linky here.
Generate loads of long tail keyword ideas for free with this very useful tool. Get it here.
Link metrics in search bar. This is another google chrome extension courtesy of Moz.com the SEO toolset company. Most of their tools have a price tag. This one is free.
Like Ubersuggest but pulls in long tail keywords from multiple search engines such as Bing & Yahoo. Go here.
Send a spider to crawl your website for errors. Essentially a free website audit. Download it here.
Answer The Public
Another keyword tool but this one creates a very useful visualization on questions, propositions and comparisons etc. Linky here.
Google Search Console
Googles very own tool lets you control how Google sees your website and see what searches are driving traffic to your website. Get it here.
This list is courtesy of the #shopify blog which probably one of the best resources for any online entrepreneur.