Ahrefs

In my organizaion we are also using Semrush, but prefer Ahrefs as Semrush sometimes doesn't show keywords where there are low search rates.

In my opinion, Ahrefs is the best backlink tool out there. Moz and SEMRush are also great tools for SEO, but if you strictly want to research your own backlinks and see what your competitors have in terms of backlinks, Ahrefs is the best way to do that. It's an easy platform to use and tells you exactly what you want to know.

With the digital initiatives we have currently underway, both are really valuable so we keep them both. The digital ecosystem changes so rapidly that only relying on one SEO tool is, in my opinion, not a great idea, as each has its own strengths and weaknesses. And the cost is not so high that it's necessary to choose one or the other unless you're really struggling, in which case you probably need to allocate more budget to your digital efforts anyway.

Ahref has more comprehensive functionality and it offers lots of online resources to train you on how to use their tools which is VERY helpful.

It's very clear that Ahrefs has a larger database than their competitors. I never run into issues where this tool isn't able to evaluate keywords - even if they are very long tail niche keywords.

The link section of the tool is also very useful. Ahrefs is able to clean up the links to root domains better than competitors, making link tracking much easier than it has been in the past.

Ahrefs provides more accurate and important data compared to other services. It has become a very trusted service among the SEO community and collected tremendous amount of data over the years of operation. Ahrefs is designed to meet the needs of a very demanding SEO expert, and this specialization makes the service very competitive.

Ahrefs is one of the best platforms available in the market dealing in developing online SEO tools and free educational material for marketing professionals. It has all the best features related to SEO and gives all the performance and analytics based on digital presence.

At the time, Ahrefs had the most robust link index. Majesitc was a close second, and Moz lagged far behind. Since then, Moz promoted a major update and expansion of their link index, and it now bears further research to determine which product would be better for our purposes. I am willing to give Moz a try, but honestly I'm too busy with clients to deal with testing right now so I'll probably just stick with Ahrefs :)

Sadly we are coming [to] terms that even trough there are more and more options that Ahrefs has they are still incomplete or not working good enough. And the most important options (like frequent updates on rankings) are behind the most expensive membership.

Right now we mainly focus on research, keyword research and PPC research, there are other tools that do a way better job with this. Also the keyword explorer gives weird suggestions and feels "incomplete". We are likely to completely switch over to Semrush or other tools.

Ahrefs is the most comprehensive tool we've used for providing SEO and performance analysis for our website clients. It's an essential part of our analytics stack, along with Google products. It doesn't require downloading and installing software, and it's more robust and user friendly than many other apps we've tried.

Ahrefs is more flexible for a large organization and overall has more features than competitors packed within a single tool. Other tools just don't have as much ability as the Ahrefs tool does. We also found the UI to be overall better on Ahrefs and easier to understand than most competitors.

Ahrefs has the best backlink data even compared to funded competitors. On top of that, their analysis and tutorials make it possible to get value easily. Monitoring your website, your competitors, and finding SEO opportunities is very easy and there are some sophisticated features that help you with it that no other competitor has.

Ahrefs is one of the many tools that I use but on it's own it's great. Many back link analysis tools don't have that many results and many test have shown that Ahrefs has some of the largest datasets in the industry. So compared to other tools, its one of the best, if not the best when it comes to backlink research.

[Semrush and Ahrefs] serve different functions

Ahrefs is my clear choice when I need to better understand the link profile of my clients' websites as its database is unmatched. However, when it comes to keyword research, it is second only to Semrush. I wouldn't say that it's worse than Semrush as each is focused on different aspects of SEO: Ahrefs for backlink data and Semrush for keyword research. Used together, they are a perfect pair but they can be used as alternatives for each other if needed.

I used to use Moz a lot and it is also a great tool. However, I found the Ahrefs UI was much friendlier and easier to navigate. I also like the specific use cases shown in the Ahrefs blog, which are much easier to follow and implement when using the Ahrefs tool itself. This helps get a lot of value out of the product for us.

Ahrefs provides a lot more data, in a lot more detail - and tells you exactly why it matters.
Moz is a nice tool - the UI is easier to navigate and there are more prompts for new users - but anyone doing serious work will do better with Ahrefs.

Semrush and BuzzSumo are also good tools. Semrush is hardcore and technical; if you outgrew Ahrefs as an SEO practitioner and were doing intense work for one big client, I'd highly recommend it. BuzzSumo is more for a social media manager; it provides huge shortcuts for figuring out what's trending around any different topics in real time.

Ahrefs has more features and more accurate data than its competitors. While both Moz and Majestic are great tools and can be used as complimentary to Ahrefs, if you have to choose one tool, definitely choose Ahrefs. It has the biggest database of links and better stats for those links coming into your website.

Ahrefs Site Explorer gives us an easier way of obtaining backlinks when we're doing link building, whereas with other products I have a more difficult time finding viable backlinks. The keyword list you can export from Ahrefs is also a lot more clear than in other products making it easier for me to read and our clients to understand.

The way Ahrefs presents the data collected is much more intuitive and easy to understand than the way SEMRush offers it.
The interface of Ahrefs is more user-friendly than the one from SEMRush. I can get lost in the way SEMRush presents the data, and their help guides are not as well written as the ones at Ahrefs.
So in general I give Ahrefs a 10/10 in user friendliness.

The closest competitor to Ahrefs Site Explorer would likely be SEMRush. Ahrefs seems to have a significantly larger amount of data to work with. They claim that their service is powered by the second most active crawler in the world, next to Google.

Moz's backlink, at least a few years ago, PALED in comparison. It was very unthorough and lacking in many backlinks that Aherfs Site Explorer would pull up. Aherfs Site Explorer would pull up way more. It also has way more info than Moz backlink tool did a few years ago - Aherfs Site Explorer has thorough stuff, such as organic keywords they rank for, ways to organize data based on pages with the most recent growth of backlinks, etc. How many .edus, how many .govs, how many powerful backlinks vs. weak ones (classified in an easy to understand way).