CrawlObserver vs CrawlRhino
CrawlObserver
crawlobserver.com
CrawlRhino
crawlrhino.comSide by side
| Figure | CrawlObserver | CrawlRhino |
|---|---|---|
| Price from | Free | £3.99/mo |
| Free plan | Yes | — |
| Free trial | — | — |
| Open source | — | — |
| Web | Yes | — |
| Windows | — | Yes |
| API | Yes | — |
| Plans published | 1 | 4 |
| Spec score · SEO Crawler Software | 8.6 (#5) | 7.6 (#24) |
| Spec score · SEO tools | 8.0 (#103) | 7.0 (#226) |
| Free plan | Yes | Yes |
| Intended users | The page presents use cases for technical SEO audits, monthly tracking, internal linking analysis, broken-link detection, and client reporting. | The maker describes the software as practical Windows SEO tools for day-to-day work, with separate applications for technical audits, monitoring, backlink checks, and log or search-data analysis. |
Plans
CrawlRhino
- CrawlRhino SEO Suite£3.99 a month
- SEO Suite Supporter£6.99 a month
- CrawlRhino SEO Suite£3.99 a month
- SEO Crawler Pro Lifetime£9.99, paid once
In their own words
CrawlObserver
CrawlObserver is a free private-beta SEO crawler available through web and API access. It reports more than 45 signals per page and describes audits without a page ceiling, including sites with 500K+ pages. Crawl comparisons identify added or removed URLs and changes to redirects, titles, and canonicals. Technical checks include redirect chains, internal PageRank, SimHash duplicate detection, and broken internal or external links. Internal authority-flow views help surface orphan pages, linking opportunities, and pages receiving too many links. JavaScript rendering can be off, automatic, or always enabled, with automatic detection for React, Vue, Next.js, and Nuxt. A REST API launches crawls and retrieves results. CrawlObserver says it follows robots.txt and crawl-delay, applies per-host delays, and blocks private IP ranges with post-DNS validation. Results are stored in ClickHouse.
CrawlRhino
CrawlRhino has no write-up on Specifiction yet; its figures are above.