Writally - Content recipes to create powerful content in 50% less time
Ubersuggest - Want more traffic? Ubersuggest shows you how to win the game of SEO. Just type in a domain or a keyword to get started.
Blog Ideas Generator - Generate a year’s worth of blog ideas--for free
Keyword Explorer by Moz - Find the best keywords to improve your website's SEO traffic
Content Strategy Tools - 7 steps and tools to create a content marketing strategy
Keyword Surfer - Get search volumes & keyword data directly in Google.