Keywords Everywhere - Keyword Tool

This chrome extension:

...is a free keyword research tool that shows you useful google keyword search volume and cost per click data on multiple websites. This tool saves you the hassle of copying data from various websites and using the google adwords keyword planner to see relevant search volume and cpc data.

Ubersuggest

Neil Patel has a handy keyword tool on his website: Ubersuggest

Keyword Hero

Get Your Organic Keywords Displayed in Google Analytics

The free plan checks your 25 most frequented URLs.

Answer The Public

The auto suggest results provided by Google & Bing are a goldmine of insight for today’s marketeers. As you type you are presented with an aggregated view of the questions & therefore a hint of the motivations & emotions of the people behind each search query.

we built simple visualisations of the data. A one-pager that could be shared to prompt a conversation on how you could start answering your public better.

https://answerthepublic.com/