Sitebulb vs Surfer
Both are seo tools. Here is what separates them.
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.
What Surfer is
Surfer is an SEO content optimisation platform. It analyses the pages already ranking for a keyword and turns what it finds into guidance you write against, covering research, briefing, drafting and on-page optimisation in one place. The core tools are the Content Editor, the SERP Analyzer, a Topical Map and NLP keyword suggestions, with a plagiarism checker alongside them. Surfer's own framing of the loop is research, audit, write, optimise and generate an SEO-optimised article in twenty minutes. Pages that already exist are catered for as well as new drafts, so a piece that has slipped can be audited and reworked rather than replaced. It was built by a team of engineers, marketers and SEO specialists. Topic handles briefing. A brief takes about ten minutes to put together, which Surfer describes as half the time editors and agencies otherwise spend, and about three hours less per report than gathering the same insights by hand. Surfer also cites a threefold increase in organic search clicks from using it. That is a vendor figure, so read it as a claim rather than a measured result. Surfer is designed to sit where the writing already happens. There is a WordPress connection for optimising directly, keyword suggestions inside Google Docs, Surfer guidelines visible while editing in Contentful, and Zapier for building custom workflows around the rest. It works with ChatGPT for SEO-tuning AI-generated drafts, and with Jasper for writing to Surfer's own best practices. Keyword Surfer, a free Chrome extension, puts keyword data into Google's results pages themselves, which is the cheapest way to see how the tool thinks before paying for anything. Plans, billed yearly, run from Discovery at $49 a month through Standard at $99 and Pro at $182 to Peace of Mind at $299. AI Search Analytics tracks 100 AI prompts for $158 a month. API access is not included by default: it is available only to active users who buy the API add-on or who are on an Enterprise plan. Surfer reports users in more than 159 countries and a community of over 150,000 customers.
We are not affiliated with either product. Upvote counts come from the published formula and neither position was paid for.