Ahrefs is a well-known tool primarily used for checking backlinks, but what most SEOs forget to take into consideration is that it is capable of so much more. With their massive data index, Ahrefs is definitely one of the most sought-after SaaS tools out in the market. Tools such as this helped eradicate the days wherein Google gets played by unethical, black hat SEO tactics. They helped the industry turn for the better, and SEO has never been simpler. With the tools such as Ahrefs being available in the market, it became simple for us to get better at what we do.
SEMrush is hands down the best tool for keyword research. I love that you can do competitor analysis and find the keywords people are searching to go to your competitor's site. You can add all your projects in one big dashboard and see a quick overview of your keyword rankings (I do this every other day to check if my sites were penalized/keywords dropped). The reporting feature is also a great alternative to Google Analytics and we send automated reports to our clients.
Cons: To an untrained eye, SEMrush can be a little overwhelming just because of the amount of data everywhere on the screen. It took me a whole week just to have some understanding of the program when I was first introduced to it. Even 2 years later..and I still find new things I didn't know before. So is it a con? Maybe not so much but to some it could be.
Pros: SEMRush is a full-fledged powerhouse for SEO building strategy and SEO audits. It's pretty beefy, so I would only recommend it if you have the time and patience for SEO, as the software gives a ton of outlets in looking up actionable items for your SEO Strategy. The first thing that I really liked with SEMRush was the initial SEO audit of my site -- I was able to see what's good and what's bad about my SEO, and the quick errors or warnings for title headers and ideas for gaining more traffic was awesome. Moving on, I found their analytics just as good as Google Analytics, showing me where my traffic is coming from and where I can improve my paid search positions. I haven't used the Social or Content aspects of SEMRush but social listening looks to be baked in well and integrated nicely. If you're in the market for seeing how your organic and paid search traffic plays a part, and then strategizing in how to improve your overall position against organic search and then your competitors, I'd recommend SEMRush.