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SPECIFICTION
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Beam Us Up vs Crab

Beam Us Up

beamusup.com

Crab

crab.so

Side by side

FigureBeam Us UpCrab
Price fromFreeFree
Free planYesYes
Free trial——
Open source——
WindowsYesYes
macOSYesYes
LinuxYesYes
APIYes—
Plans published11
Spec score · SEO Audit Software8.3 (#8)8.2 (#10)
Spec score · SEO Crawler Software8.4 (#10)8.2 (#12)
Spec score · SEO tools7.7 (#139)7.7 (#134)
Free planYesYes
IntegrationsThe installer can connect BeamUsUp to AI assistants it finds, including Claude, Cursor, VS Code, Windsurf, Codex CLI, and Gemini CLI, through MCP.The maker's comparison page lists Google Analytics, Search Console, PageSpeed Insights, and other integrations as “Soon.”
JavaScript renderingIt can render JavaScript pages using Chrome or Edge already installed on the computer.Crab can render JavaScript sites with headless Chrome, including React, Vue, and other single-page applications.
ProductBeamUsUp is a downloadable SEO spider crawler that runs on your computer.Crab is a desktop SEO crawler for auditing websites.
Site auditYesYes
SupportThe maker says users can leave a comment on the release post with a real email address and URL to receive a reply.The homepage directs users with questions to GitHub.

Plans

Beam Us Up

  • BeamUsUp SEO CrawlerFree

Beam Us Up pricing →

Crab

  • FreeFree

Crab pricing →

In their own words

Beam Us Up

Beam Us Up is a downloadable SEO spider crawler that runs on a computer. The maker describes it as completely free with no limits. It checks links, redirects, duplicate content, headings, metadata, sitemaps, crawl depth, blocked URLs and Google PageSpeed. Version 2.0 reports whether robots.txt permits or blocks 27 search engines and AI bots, and can render JavaScript pages through Chrome or Edge installed on the computer. Two crawls can be compared to identify fixed, new and remaining problems and page changes, with comparison data exported as CSV files in a ZIP. The maker says version 2.0 can crawl sites with 100,000 or more pages. Command-line mode writes a JSON report and returns an error code when selected problems appear. Optional checks cover security headers and SSL certificates. MCP connections to listed AI assistants are supported. Browser passwords remain in memory only while the app is open.

Visit beamusup.com

Crab

Crab has no write-up on Specifiction yet; its figures are above.

Visit crab.so