Ahrefs vs Sitebulb
Both are seo tools. Here is what separates them.
What Ahrefs is
Ahrefs is a paid SEO toolset built around a backlink and keyword index, used to work out what competitors rank for, track your own positions and find the technical faults holding a site back. The suite is split into named tools: Site Explorer, Keywords Explorer, Rank Tracker, Site Audit, Content Explorer, Brand Radar, Web Analytics and Bot Analytics. Keywords Explorer is the research end. It holds 28.7 billion keywords across 217 locations, and for any one of them returns Keyword Difficulty, search volume, traffic potential and the parent topic the term sits under, along with a reading of intent as commercial, navigational or informational. Site Explorer handles the competitive side across 185 locations, and goes beyond organic data to report a rival's ad spend, ad copy, CPCs and ad positions country by country. Site Audit is the technical half. It crawls at up to 170,000 URLs per minute, checks for more than 170 technical and on-page problems and rolls the result into a single SEO health score. It executes JavaScript while crawling, so pages that assemble themselves in the browser are audited as a visitor would see them rather than skipped. What separates the plans is mostly scale and memory. Lite, at $129 per month, covers 5 projects, 750 tracked keywords and 100,000 crawl credits, with six months of historical data. Standard at $249 raises that to 20 projects, 2,000 keywords, 500,000 credits and two years of history, and Advanced at $449 goes to 50 projects, 5,000 keywords, 1,500,000 credits and five years. Site Explorer's index reaches back more than ten years, so on the lower plans you are buying access to a shorter window of it rather than a smaller archive. Enterprise, at $1,499 per month on an annual commitment, removes the history limit and adds SSO and uncapped API access. A Starter plan sits at $29 per month. Extra seats are charged on top at $40 per user on Lite, $60 on Standard and $80 on Advanced, capped at 2, 5 and 10 users respectively. Paying annually is stated to save up to 17 percent. Two things sit outside the plan ladder. Ahrefs Webmaster Tools is free and gives Site Explorer, Site Audit and Web Analytics, but only for sites you have verified ownership of, so it is a diagnostic for your own properties rather than a way to research anyone else's. Brand Radar AI is sold separately from $199 per month, and on the standard plans tracked AI prompts are capped at 5 on Lite, 10 on Standard and 20 on Advanced.
What Sitebulb is
Sitebulb is a technical SEO auditing tool that crawls a website and explains what it found. It is built for consultants, agencies and in-house SEO teams who have to hand somebody a report they can act on. There are two versions. Sitebulb Desktop runs on your own machine and crawls up to 500,000 URLs per audit. Sitebulb Cloud runs the same audits without a machine to keep awake, handles up to 10 million URLs, and lets a team work on the same crawl data at once. Neither imposes project limits or crawl credits, so the cost is a fixed monthly figure rather than a meter. That is the difference the product leads with against the older cloud crawlers. An audit covers more than 300 issue types, starting with the ones that break indexing: broken links and redirects, overlapping or inconsistent robots directives, orphan pages missing from XML sitemaps, duplicate content, and hreflang. It renders JavaScript the way Googlebot does, so a site that assembles its content in the browser is audited as a search engine would see it rather than as raw HTML, and JavaScript crawling is in every plan rather than sold as an upgrade. Structured data is validated automatically, Core Web Vitals are collected, and the crawl also reports accessibility violations and security issues. The reporting is where it separates from a crawler that simply lists problems. Issues arrive prioritised, each with an explanation of why it matters, which is what makes the output usable by somebody who is not a technical SEO. Reports export to Google Sheets so the data stays shareable and current, and monitoring dashboards can be built across several projects in Google Data Studio. It connects to Google Search Console and GA4, pulling real traffic and engagement figures such as bounce rate and conversions into the audit. A technical issue can then be weighed against the pages that actually earn visits, rather than treated as equally urgent everywhere. Content extraction is customisable for anything the standard checks do not cover, and there is a dedicated report for auditing JavaScript. Sitebulb is paid, with a 14-day free trial. The Desktop version suits an individual consultant; Cloud suits teams, and anyone auditing sites large enough that a laptop is the bottleneck.
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