6 Top SEO Tools Online for 2018

Search engine optimization is the key to gaining top positions in the SERPs. It always has been and it always will be. As long as people search for phrases and as long as domain authority is a key factor, SEO will always be an important part of ranking a website in sites like Google, Yahoo and Bing. Knowing how to reach top ranks in the most popular search engines is an incredibly complex task. Add the constant algorithm updates to the mix and you've got to be on your A-game at all times in order to keep track of what works now and what SEO tactics are long gone.

The use of SEO and marketing tools is one of the best ways to simplify the process. While it's not a magical pill that instantly grows the value of your website, top SEO tools can help you reach a much higher status with much more simplicity. The best SEO tools online work as a guideline. They guide you by showing you the easiest keywords worth trying to rank for, how to find quality backlinks and so much more.

Along with guiding you through search engine optimization tasks, the best SEO tools allow you to really keep track of your website's progress with pure simplicity. Monitor keywords, keep track of backlinks, discover new linking opportunities and so much more. However, the cost of a best SEO analysis tool isn't cheap, making it difficult to pick just one. In most cases, webmasters will only use one or two tools, so we've narrowed down the top rated SEO tools of 2018 in order to help you make a quick decision and find the best SEO tools for your needs. 

Also check out SupplyGem's comparison section for eCommerce platforms: supplygem.com/compare

Top 6 SEO Tools Comparison Chart









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Keyword Management

Keyword Difficulty

Backlink Audit

Est. Click Value

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Top SEO Tools Features & Recommendations

  • Keyword Research - One of the most vital tools that you'll want to look out for when searching for a quality and professional SEO tool is keyword research. Being able to find out which keywords are hot, the search volumes, the average difficulty and other such stats is crucial to picking the best keywords worth working towards.
  • Database Freshness - Along with keyword research tools comes the freshness of the database. Quality sites like SEMrush and Ahrefs will provide you with daily and weekly database updates. In fact, SEMrush went through an entire database restructuring in early 2018, providing you with the most up to date information available.
  • Keyword Difficulty - Database freshness is all well and good, but if you don't know how difficult it is to rank for specific keywords, you may never know which keywords to choose. Quality tools like SEMrush will allow you to quickly find the difficulty score for any given keyword, allowing you to access whether or not it's even worth trying to rank for.
  • Rank Tracking - Being able to automatically keep track of your keywords is a solid feature worth looking for. Rank tracking lets you monitor progress and most tools will email and notify you whenever massive drops or gains are noticed. It's a great feature worth paying for when you've got a lot of websites to monitor.
  • Backlink Audit - Along with monitoring your website's keywords, you'll also want to be able to monitor your backlinks. One of the most crucial ranking signals for the SERPs is quality mentions, so good SEO tools will be able to provide you with backlink monitoring and auditing functions. 

Are you interested in displaying Adsense ads on your website?

If so, you'll probably want to opt for one of the top SEO tools to provide you with estimated click values. This shows you how much you can expect to receive on average for clicks from visitors that arrive to your website from that specific keyword. 

Keep in mind that this is only an estimate and an average, so it could be much higher or lower. However, it surely helps to see which niches pay more than others.

One of the major positives to having keyword monitoring for your websites is because Google is constantly updating their algorithm. Keywords move around in the SERPs on a daily basis, but every now and again, there is massive movement. 

With keyword monitoring, you can keep an eye on this and quickly react when you notice large drops in rankings. This allows you to quickly get back on your feet. Likewise, backlink monitoring is essential if you want to quickly detect negative SEO attacks such as millions of spammy links pointing to your domain. If such an event happens, you will immediately be notified and can instantly disavow the bad links before they have a negative effect on your website.

Reviews of the 6 Best SEO Tools

SEMrush Review

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SEMrush is one of the most popular SEO tools available online. They have one of the freshest databases available and bring you website data for millions of sites worldwide. You can quickly swap between countries, or you can choose to analyze data for international rankings. SEMrush has numerous tools available such as entire website SEO audits, backlink monitoring, keyword monitoring, competitor analysis and so much more. As one of the leading SEO tools online, this is the best SEO tool that we are proud to recommend.

800+ Million Keywords

1+ Million Users

130+ Million Domains

SEO Academy & Training

Ahrefs Review


Ahrefs is one of the must-have SEO tools if you're looking for a secondary option to go well with SEMrush. Ahrefs has a massive database - one of the largest on the internet. With over 240 million keywords for the USA database alone, it's easy to see why Ahrefs is worth using. They have their own unique domain authority and page authority ranking system. Ahrefs also provides you with an easy to read score that shows you how simply it should be to rank your web page for specific keywords and they also tell you an estimated amount of backlinks needed to rank on page 1.

240+ Million Keywords in USA

100+ Countries

6+ Billion Web Pages

200+ Million Root Domains

MOZ Review


MOZ may seem like overkill when it comes to tracking your website's backlinks, but it's not. Their SEO tools are among the best and their domain authority and page authority scores are thought to be among the most reliable rankings on the internet. In fact, most websites rely on MOZ DA and PA scores when buying backlinks, selling websites or even comparing core metrics. MOZ has a massive amount of keyword research tools, backlink tools and so much more - it's one of the great SEO tools worth adding to your list.

5+ Billion Daily Searches

600,000+ Active Members

Reliable DA & PA Scores

9/10 Customer Satisfaction

Spyfu Review


If competitor analysis is what you're looking for, forget about the other tools mentioned above. While SEMrush, Ahrefs and MOZ all offer quality competitor analysis tools, Spyfu is the niche specialist. They do one thing amazingly good and that's finding out your competitor's information such as backlink sources, keywords they rank for and so much more. They have a ton of other great SEO features included as well, but if you're signing up to Spyfu, know that it's core feature is competitor analysis - and boy do they excel at that!

11+ Years in Business

6+ Billion Results

84+ Million Domains

#1 for Competitor Analysis

Majestic Review


Majestic is very well-known for their Trust Flow and Citation Flow scores, which indicate the quantity and quality each website has. However, they also provide one of the best backlink checking platforms on the internet. With daily updates and the ability to browse a historic database, Majestic is the go-to tool if you need to keep a close eye on your backlink profile. You can also use Majestic to compare your websites with competitors' sites in order to really maximize your efforts and direct your energy towards surpassing the competition.

1+ Trillion URLs Found

Daily Updates

#1 Backlink Checker

Reliable TF & CF Scores

Mangools Review


Mangools may be rated lower than the other SEO tools listed here, but that's only because the other tools are absolutely perfect. Mangools is also outstanding and worth using. Best of all, many of their features are free to use. They have one of the best keyword research tools on the market, including the ability to find keywords using autocomplete. Their backlink tool is also highly recommended, as you can quickly find your competitor's links and figure out the link strength for each one. Explore Mangools and all of their amazing SEO tools right now!

Unique SEO Difficulty Scores

Backlink Link Strength Scores

Autocomplete Keyword Tool

Keywords in 40+ Languages