Sitebulb alternatives: 5 free & open-source picks

Curated, verified, and actually free. No trials, no crippled tiers. Star counts and last-activity dates checked by hand, not scraped and forgotten.

sitebulb $18/mothese $0PARCIALcan I vibecode it? the honest breakdown📈 seo y marketing
SiteOne Crawleropen sourcedesktopclione-click install

Rastrea de forma local, calcula una puntuación de calidad y te dice qué arreglar primero; casi sospechosamente fiel al objetivo.

licenseMIT

runson your machine

installDownload a prebuilt desktop or CLI binary for Windows, macOS or Linux

enginesOptional OpenAI, Anthropic, Gemini, vLLM, Ollama, LM Studio or any OpenAI-compatible endpoint

dataRuns locally and writes project results plus HTML, JSON or text reports and exports to the user's disk

the catch vs SitebulbIts fix-first scoring is useful, but its prioritization and guided evidence are less polished than Sitebulb's.

setupNone for ordinary crawling; JavaScript rendering needs Chrome or Chromium, or the one-time headless-shell download

facts verified 2026-08-11

LibreCrawlopen sourcewebself-hosteddocker to self-host

Rastreos ilimitados y un panel en el navegador con auditorías; la priorización es más simple, pero la evidencia está ahí.

licenseMIT

runsyour server

installDocker Compose, or a Python environment plus Playwright

dataSettings live in browser localStorage; each browser session has isolated crawl data that expires after one hour unless exported as CSV, JSON or XML

the catch vs SitebulbIt has no durable project history and presents much plainer prioritization and evidence than Sitebulb.

setupDocker or Python plus Playwright is required, and local mode has no authentication unless the operator adds it

facts verified 2026-08-11

SEOnautopen sourcewebself-hosteddocker to self-host

Almacena auditorías y ordena los problemas por gravedad; no es tan bonito como Sitebulb, pero igual de capaz de arruinarte la tarde.

licenseMIT

runsyour server

installDocker Compose with MySQL 8.4, then expose the web UI behind HTTPS

dataSites, crawl results and audit history live in the self-hosted MySQL database

the catch vs SitebulbIt produces a simpler severity list without Sitebulb's rich visual hints, explanations and guided investigation.

setupDocker, MySQL and a reverse proxy are required; its default exposed port is plain HTTP

facts verified 2026-08-11

FreeCrawlopen sourcedesktopclione-click install

Un rastreador de escritorio con 200 verificaciones, evidencia de problemas y comparaciones de proyectos; el motor de sugerencias es más joven, no imaginario.

licenseMIT

runson your machine

installWindows installer or portable build, macOS DMG, or Linux AppImage, deb or rpm

enginesOptional OpenAI, Anthropic and local Ollama; optional GSC, GA4, PageSpeed, Ahrefs, Moz, Semrush, Majestic and MCP connections

dataLocal SQLite WAL project files (.seoproject), optionally AES-256-GCM encrypted; exports include Excel, CSV, JSON, XML, HTML, sitemaps, Google Sheets and BigQuery

the catch vs SitebulbIts hint engine and visual prioritization are younger and less proven than Sitebulb's mature audit guidance.

setupThe prebuilt apps install normally, but the macOS build may require bypassing Gatekeeper for an unsigned application

facts verified 2026-08-11

Crawlyfreedesktopone-click install

Un rastreador gratuito para Mac que convierte diecinueve tipos de problemas en una lista clara de hallazgos y conserva las diferencias entre rastreos.

licenseproprietary, free

runson your machine

installDownload and install the native universal macOS app

enginesA local MCP server connects to Claude Code, Cursor, Codex, Windsurf and other MCP clients

dataCrawl projects and history live in a local SQLite database on the Mac; there is no hosted account or cloud sync

the catch vs SitebulbIts nineteen checks and simple findings list are much narrower than Sitebulb's visual hints, prioritization and evidence-rich reporting.

setupmacOS only

facts verified 2026-08-11

last updated 2026-08-11 · no votes, no pay-to-list · just what's real

the usual suspects · recommended everywhere, rejected here

RustySEOLooks like the obvious new answer; v0.3.9 and its own buggy warning say not for readers yet.

at a glance
toollicenserunning itplatformsstarsactive
SiteOne CrawlerMITone-click installwindows, macos, linux, cli8412026-06
LibreCrawlMITdocker to self-hostweb, self-hosted8272026-06
SEOnautMITdocker to self-hostweb, self-hosted7512026-05
FreeCrawlMITone-click installwindows, macos, linux, cli872026-07
Crawlyproprietary, freeone-click installmacos
Rather build it exactly your way? The one-shot prompt is free too.get the prompt →
why people still pay for Sitebulb

People still pay for Sitebulb because a crawler is buildable; professionals pay for years of edge-case handling and reports they can trust with clients. The recurring cost buys robots handling, rendering, canonicalization, deduplication, crawl traps, rule maintenance, scheduling, storage, and false positives, not just the visible interface. If none of that applies to you, any pick above saves $216 a year.

questions
Is there a free alternative to Sitebulb?

Yes: SiteOne Crawler, LibreCrawl, SEOnaut and 2 more. Every tool on this page is either open source or genuinely free to use long-term: no trials, no crippled tiers.

Should I just build my own Sitebulb?

Our verdict is PARCIAL. The core loop is buildable, but a dependable replacement becomes a real weekend or multi-day project. For Sitebulb, crawl an owned site and turn technical findings into prioritized, evidenced hints. The hard boundary is rule depth, visualization, reporting, javascript crawling, and agency workflow, plus crawl scale, rule depth, and operational polish. If you'd rather build, the exact one-shot prompt is free at puedovibecodearlo.app/sitebulb.

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