1) SEMrush - I believe that among all the 3rd party software, SEMrush has the largest keyword database. Their search volume data is pretty accurate and aligns with the Google keyword planner. Also, based on the type of content that needs to be produced (i.e. informational, transactional, etc.), one can utilize different filtering options available in it.
However, this does not mean you cannot topple them. It just takes more of an effort in terms of content as your page has to build the trust. That is why you will see the "Google dance" happening for fresh content from a site that is not yet trusted or is not very authoritative. Google gives your page a chance and measures user click-throughs when it pushes you to certain spots in the SERPs and then measures user engagement levels when the traffic hit your site through those positions in the SERPs.
Jaaxy keyword research tool is a web-based tool which requires a membership to use. Providing High-quality SEO keyword research information to the user to allow them to produce content on their site that will rank and get actionable traffic. Jaaxy pulls information from Google, Bing, and Yahoo, to show the most relevant information regarding keywords. Not just pay per click data, but the right data that shows you what you need in order to properly put together a post or a page and get it on page 1
I have been using KWFinder for over a year now and can’t believe I haven’t shared this with you guys yet. It is hands down the best keyword research tool out there! It’s one of those rare tools you find that just never closes in your browser. It’s fast, the UI is amazing, and it is what I use to base my keyword research on for every blog post I write on all my sites. I haven’t used Google’s Keyword Planner for a long time, and to be honest I always hated it. If you are looking for a good Keyword Planner alternative, then look no further! Check out my in-depth KWFinder review below.