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Pick up to 4 seo crawlers and we'll lay out their specifications side by side. Apples to apples only — once you pick the first item, the picker locks to its category so you don't end up comparing Selenium with OWASP Top 10.

Your selection — SEO Crawlers

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Sitebulb ×
Ahrefs ×
Locked to SEO Crawlersstart over to switch.
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Sitebulb

Sitebulb

Commercial

Visualised SEO crawler with prioritised hints.

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×

Ahrefs

Ahrefs

Commercial Cloud / SaaS Enterprise

All-in-one SEO toolset including site audit.

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Specification comparison

Schema: Tools. Missing values are marked "Not available yet" — those are next on our research list.

Rating key: Positive / Free / Fast Limited / Moderate Difficult / Steep Informational
Attribute
Sitebulb
Sitebulb
×
Ahrefs
Ahrefs
×
Pricing Lite
£13.50/mo; Pro £35/mo; Cloud Pro £149/mo
Lite
$129/mo; Standard $249/mo; Advanced $449/mo
Free tier / OSS 14-day
trial
Free
Webmaster Tools (limited)
License Commercial Commercial
(SaaS)
Testing type SEO / Site Audit SEO / Site Audit
Languages / SDKs N/A (desktop + cloud app) N/A (web-based)
Supported platforms Windows, macOS, Cloud Web (SaaS); browser extensions for Chrome/Firefox
Parallel testing N/A N/A
Speed Fast
— visual crawl maps
N/A
Key integrations Google Search Console, Google Analytics, Ahrefs, Majestic Google Search Console, WordPress, Looker Studio
Learning curve Easy Easy
Community / Support Growing
SEO community
Very
large; Ahrefs Academy + blog
Maintained by Sitebulb Ltd Ahrefs Pte. Ltd.
First released 2017 2011
Latest version See website See website
Best suited for Agencies & consultants wanting visual site audit reports SEO teams needing backlink analysis + site audit in one tool
Official site sitebulb.com ↗ ahrefs.com ↗

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