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.
Crawls locally, calculates a quality score and tells you what to fix first; almost suspiciously on brief.
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
Unlimited crawls and a browser dashboard with audits; prioritization is plainer, but the evidence is there.
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
Stores audits and sorts issues by severity; not as pretty as Sitebulb, equally capable of ruining your afternoon.
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
A desktop crawler with 200 checks, issue evidence and project comparisons; the hint engine is younger, not imaginary.
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
A free Mac crawler that turns nineteen issue types into a clean findings list and keeps crawl diffs.
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
RustySEOLooks like the obvious new answer; v0.3.9 and its own buggy warning say not for readers yet.
| tool | license | running it | platforms | stars | active |
|---|---|---|---|---|---|
| SiteOne Crawler | MIT | one-click install | windows, macos, linux, cli | 841 | 2026-06 |
| LibreCrawl | MIT | docker to self-host | web, self-hosted | 827 | 2026-06 |
| SEOnaut | MIT | docker to self-host | web, self-hosted | 751 | 2026-05 |
| FreeCrawl | MIT | one-click install | windows, macos, linux, cli | 87 | 2026-07 |
| Crawly | proprietary, free | one-click install | macos | — | — |
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.
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.
