Software Comparison
Ahrefs vs Screaming Frog SEO Spider vs Slemma

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Listed in : Business Intelligence & Analytics

Ahrefs is one of the largest indexes of live backlinks in the world. Thanks to their extraordinarily advanced website analysis tools, including: Crawl... Learn More


Listed in : Business Intelligence & Analytics

Screaming Frog SEO Spider analyzes thoroughly internal and external backlinks, as well as site images, CSS, scripts and applications and provides deta... Learn More


Listed in : Business Intelligence & Analytics

Slemma brings your data and team together, giving everyone the ability to explore data and share insights across the company. With Slemma, you and you... Learn More

Free Trial

Pricing Starting From

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Ahrefs

Competitive Intelligence

$ 79
Single payment / 1 user(s)

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Screaming Frog SEO Spider

SEO & SEM

$ 150.38
Single payment / 1 user(s)

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Slemma

Business Intelligence & Analytics

$ 29
For 1 Month / 3 user(s)

Available Features

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Ahrefs

Competitive Intelligence

Campaigns 250

Tracked Keywords 20.500

Domain Health

Alerts

Data Rows Limit 2B

Batch Analysis Units 4M

OpenApp Rows 6M

Social Metrics

Site Explorer

Broken Backlinks & Links

Disavow Links Integration

Content Analysis

Content Explorer

Alerts 200

Results 10K rows

Positions Explorer

Results 100K rows

Positions 1-100

Keywords Explorer

Results 40k rows

Positions

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Screaming Frog SEO Spider

SEO & SEM

The 500 URI crawl limit is removed

You can access ALL the configuration options

You can save and re-upload crawls

You can search for anything in the source code of a website with the custom source code search feature

You get support for any technical issues with the software

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Slemma

Business Intelligence & Analytics

Local Files, Files by URL, Cloud Storage

Database integrations

Integrations with Cloud Services

Dashboard Designer

Presentation Builder

Calculations

Data blending

Dashboard & Data export

Scheduled Emails

24/7 Chat Support

Free Trial Availability

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Ahrefs

Competitive Intelligence
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Screaming Frog SEO Spider

SEO & SEM
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Slemma

Business Intelligence & Analytics
Free Trial Available

Most Favorable User Review

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Ahrefs

Competitive Intelligence
User review from
10
Steve Miller
Sep 21, 2015

Ahrefs is the most accurate, but not the most comprehensive, backlink analysis tool that I’ve ever used. What I mean by that is that any link it tells you is there is most likely there, as stated. However, it often does not find all of the links that are out there. It is continuously getting better at finding more and more links, but if you need a comprehensive list, you may want to combine the list from Ahrefs with other tools, like MajesticSEO and Open Site Explorer. You may even want to run the resulting list through SEO PowerSuite’s SEO SpyGlass to get the live information about those links. But, if you are looking for an overview of a link profile, Ahrefs will do that for you without a bunch of additional processing. You will get an accurate list of the most prominent links for the site, even if you don’t get a completely comprehensive list. But, the more comprehensive tools tend to have more inaccuracies in them, particularly links that are no longer there. One great feature that Ahrefs has that the other tools haven’t seemed to incorporate yet is the ability to filter out links that are in your disavow file in Google Search Console. You’ll have to download your list from Google Search Console and manually upload it into Ahrefs, but then it will ignore links that have been disavowed, giving you a much more accurate look at your list of links without having to export links and manually process them. It is a great feature.

Pros :

- Has a very accurate list of backlinks for analysis - Runs quickly - Supports Disavow files - Can check on competitors easily

Cons :

- Doesn’t have the most comprehensive list of backlinks for analysis - The uploaded Disavow file applies to all reports, not just the site you upload it for - The tool is one of the more expensive backlink tools

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Screaming Frog SEO Spider

SEO & SEM
User review from
10
Steve Miller
Sep 21, 2015

Screaming Frog is one of the easiest to use and most comprehensive crawling software packages on the market. It thoroughly crawls a site with lots of options, including options to extract data from the site for other users, or to check to see which pages have specific types of content. The program is also constantly being updated with new and useful features. Some useful features that have been added in the past year: visual representations of responses and errors, the ability to extract information directly from websites with regular expressions, the ability to selectively ignore the robots.txt file to gather additional information, and more. If you are looking for a tool that will give you a solid view of an entire site with lists of errors on the site in a comprehensive and exportable fashion, this is the tool for you. Here are some of the types of errors it can detect and export: 300 level errors, 400 level errors, 500 level errors, URLs with underscores or capital layers, duplicate URLs, URLs with parameters, URLs that are too long, missing or duplicate titles, titles too long or too short, titles same as the H1, multiple titles on one page, missing or duplicate descriptions, descriptions too long or too short, multiple descriptions on one page, missing H1s or H2s, duplicate H1s or H2s, H1s or H2s too long, multiple H1s or H2s on the page, and more.

Pros :

- Extensive crawler - Easy to use - Lots of options - Exporting is widely available and covers everything for the premium version - Frequent updates included in the price

Cons :

- Costs annually to keep using the premium version - Uses up a lot of memory for large sites - Increasing the memory limit is non-intuitive

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Slemma

Business Intelligence & Analytics

No favorable user review available yet for Slemma.

Most Favorable Critic Review

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Ahrefs

Competitive Intelligence
100
Julie Joyce , Search Engine Land

Tuesday 06 November 2012

Now that the basics are out of the way I have to say that I absolutely love the Ahrefs tool. It’s fast and the graphical representations are very easy to understand (even for a novice I imagine.) In this suite you’ll find a Site Explorer, Keywords Analysis, Backlinks Report, Domain Comparison, Batch Analysis, and Competition Analysis tools.

More about Ahrefs
View all the Ahrefs Critic Reviews
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Screaming Frog SEO Spider

SEO & SEM
100
Kevin Vertommen , Tuts+

Thursday 24 July 2014

It’s a great tool to help you optimize a website and boost its performance in search result pages. Additionally; it’s completely free, so it should be a mandatory tool in every web designer’s toolbox!

More about Screaming Frog SEO Spider
View all the Screaming Frog SEO Spider Critic Reviews
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Slemma

Business Intelligence & Analytics

Demo Video

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Ahrefs Demo Video

Competitive Intelligence

No Demo Video Available.

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Screaming Frog SEO Spider Demo Video

SEO & SEM
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Slemma Demo Video

Business Intelligence & Analytics

Screenshots

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Ahrefs

Competitive Intelligence
Screenshot for Ahrefs 4 screenshots available
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Screaming Frog SEO Spider

SEO & SEM
Screenshot for Screaming Frog SEO Spider 4 screenshots available
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Slemma

Business Intelligence & Analytics
Screenshot for Slemma 4 screenshots available

Typical Customer

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Ahrefs

Competitive Intelligence
  • Business
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Screaming Frog SEO Spider

SEO & SEM
  • Business
  • Personal Use
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Slemma

Business Intelligence & Analytics
  • N/A

Supported Devices

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Ahrefs

Competitive Intelligence
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Screaming Frog SEO Spider

SEO & SEM
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Slemma

Business Intelligence & Analytics

Supported Languages

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Ahrefs

Competitive Intelligence
  • English
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Screaming Frog SEO Spider

SEO & SEM
  • English
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Slemma

Business Intelligence & Analytics
  • English
  • Russian

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