I just have the free version right now so I don't know all that the pro one can do. But even the free version has A LOT of tools you can use, I haven't even figured them all out yet. But one that I have used is their Content Optimizer. You can take a new or existing content piece of yours, and compare it to one of your competitor's pieces on a similar topic, and see where you might be lacking based on the keywords that are used in each piece.
For high-volume searches, keyword selection tools are usually quite efficient. Conversely, when the volume is low, the results are often misleading or near zero. In 2004, Google engineer Amit Singhal announced that over 50% of searches on Google were unique. Also, a 2009 study showed a 22% increase in the length of the search strings of 8 words or more.
Of all the tools listed in this article, Moz Link explorer is an old one & quite popular.  If you want to compare backlinks between two or more domains, Open Site Explorer is worth trying. This tool works best when you have a paid account of SEOMOZ though a free version of this tool is good enough to get you started checking the backlinks of your site and the sites of your competitors.

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.

The total number of backlinks and their quality pointing to your complete website result in the overall authority of your domain. The external links that all point to a specific page will help this page to rank in the search engine results (SERPs). The relevance and quality of an external link are very important factors when you like to measure the impact / value of an link. To find out more about quality links have a look at this article on: the Official Google Webmaster Central Blog – https://webmasters.googleblog.com/2010/06/quality-links-to-your-site.html
Ext: The number external do-follow links that are on the page linking to you. Having a link on a page with only 3 do-follow external links can be a stronger signal than a link on a page with 100 external do-follow links. You'll notice the numbers are color-coded. Green means it's a good number of external links, black means neutral and red means there are too many other links on the page.
Keyword research is a constant process. Trends change. Seasons change. Popular terms and catch-phrases change. SEO and marketing agencies are a great resource for ensuring that keyword research is done on a regular basis. You should refresh your research at least quarterly, ideally monthly, to stay ahead of your competitors. Partnering with a reputable SEO agency is a great way to ensure you’re always ahead of your competition.
In Chapter 2, we learned about SERP features. That background is going to help us understand how searchers want to consume information for a particular keyword. The format in which Google chooses to display search results depends on intent, and every query has a unique one. Google describes these intents in their Quality Rater Guidelines as either “know” (find information), “do” (accomplish a goal), “website” (find a specific website), or “visit-in-person” (visit a local business).

So At the End Of This Post I Only Want to Say My Honest Words About Monitor Backlinks.If you are Serious About Blogging and A Seo Firm or Agency or digital Marketer. Then This Tool Will definitely For you Because Backlinks Are The Bone of every Website if you Want to Stay Away your Website from negative seo affect and Want to Find New Link Building Opportunities. 

Keyword research is an important part of SEO, because it will help you to understand the interests of your customers. Based on this knowledge, you’re able to identify  keyword opportunities in your industry that will help you to write successful online content. By doing your keyword research the right way, your able to have a positive impact on your content performance. Translating into higher rankings, better content engagement and a higher conversion rate. 
Hi, Great article! the tools you listed in this article are great. I tried only Keyword planner and at present I’m using a long tail pro for Keyword search but I didn’t try the other tools you said. Because I’m new to this and now only I’m learning one by one. At this time, I thought this guide will help me to know more about keyword search tools. It’s wonder and thank you so much for this nice guide.
We’ve discussed the mechanics of search and the importance of link popularity. We’ve explained that that a page is more likely to rank if it is part of an authoritative website and that a website is authoritative if it has many links to it from many other websites. Now it’s time to actually estimate authority of the websites that rank and therefore estimate the competition for a given phrase.
You can also block certain files or folders with passwords to the public or from certain bots. For example if you are still setting up a site and don't want it accessed - you can block it. This is very useful when building your Private Blog Network, because you can block tools like Ahrefs and Majestic from crawling your PBN site and hence hide any backlinks to your main money site from being discovered by your competitors (and therefore hide your PBN entirely). You can read up on Private Blog Networks and how to build them in my PBN guide.
Hey, friends! Today I’m going to share some ridiculously easy (and free!) keyword research tips to help your blog posts get more traffic. We’re going to keep this easy-to-read without getting into all that confusing keyword mumbo-jumbo. Plus, this method doesn’t take more than a search bar! Easy, right? If you’re new to keyword research, then you’re in the right spot!
It’s important to note that entire websites don’t rank for keywords — pages do. With big brands, we often see the homepage ranking for many keywords, but for most websites this isn’t usually the case. Many websites receive more organic traffic to pages other than the homepage, which is why it’s so important to diversify your website’s pages by optimizing each for uniquely valuable keywords.
Basically, Google shows the autocomplete suggestions whenever you start typing anything into Google search box. It is in Google's best interest to show the most relevant keywords in the autocomplete suggestions. Keywords that would help Google to retrieve the most relevant websites and help users find the most relevant content for their search query.

I’m very local service oriented and I have several pages that our on the first page of google and I do get traffic. I see that I have a 1 rating DA and PA. There is decent competition for some of my keywords. Is possible to have a website that generates traffic with only a 1? It’s a young site and I’m trying my best to get it going stronger. I hired someone but that clearly hasn’t worked out well if I’m still at a one.
In addition, you can dig into the paid side of search and find out what keywords your competitors are bidding on, and then leverage those keywords for your own organic benefit if you're not already doing so. Search Metrics does this as well, but I've found SEMrush to provide a greater range of keywords and they save more historical keyword data than Search Metrics.
Yes solid keyword data dramatically changes the game as far as rankings go. I have seen many tools that provide Cost per click stats and meaningless charts that confuse most users. the data Jaaxy provides helps drive “organic” traffic to your site on a consistent basis which will out perform PPC sites every time. I like how you say thinking like the end user, as I feel that way when I search. I dive into what people are looking for and it really helps drive content idea’s. I have seen great results from that.
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