Home/Free alternatives/Sitebulb
Sitebulb sitebulb.com

Free alternatives to Sitebulb

Sitebulb costs $18/mo on the Lite plan, or $216 a year. Here are 5 free and open-source options, what each one does, and what you give up compared with paying.

Prices checked Aug 14, 2026Can AI replace it? Half-bot

01At a glance

AlternativeTypeWhere it runsWorks on
CrawlyFreeOn your deviceMac
FreeCrawlOpen sourceOn your deviceWindows, Mac, Linux, Command line
LibreCrawlOpen sourceYou host itWeb, Your server
SEOnautOpen sourceYou host itWeb, Your server
SiteOne CrawlerOpen sourceOn your deviceWindows, Mac, Linux, Command line

02Each alternative, in detail

CrawlyFree

A free Mac crawler that turns nineteen issue types into a clean findings list and keeps crawl diffs.

Versus paying: Its nineteen checks and simple findings list are much narrower than Sitebulb's visual hints, prioritization and evidence-rich reporting.

Setup: Download and install the native universal macOS app

Watch for: macOS only

getcrawly.com →
FreeCrawlOpen source

A desktop crawler with 200 checks, issue evidence and project comparisons; the hint engine is younger, not imaginary.

Versus paying: Its hint engine and visual prioritization are younger and less proven than Sitebulb's mature audit guidance.

Setup: Windows installer or portable build, macOS DMG, or Linux AppImage, deb or rpm

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

87 GitHub stars (checked Aug 6, 2026)

freecrawl.net →
LibreCrawlOpen source

Unlimited crawls and a browser dashboard with audits; prioritization is plainer, but the evidence is there.

Versus paying: It has no durable project history and presents much plainer prioritization and evidence than Sitebulb.

Setup: Docker Compose, or a Python environment plus Playwright

Watch for: Docker or Python plus Playwright is required, and local mode has no authentication unless the operator adds it

827 GitHub stars (checked Aug 6, 2026)

librecrawl.com →
SEOnautOpen source

Stores audits and sorts issues by severity; not as pretty as Sitebulb, equally capable of ruining your afternoon.

Versus paying: It produces a simpler severity list without Sitebulb's rich visual hints, explanations and guided investigation.

Setup: Docker Compose with MySQL 8.4, then expose the web UI behind HTTPS

Watch for: Docker, MySQL and a reverse proxy are required; its default exposed port is plain HTTP

751 GitHub stars (checked Aug 6, 2026)

seonaut.org →
SiteOne CrawlerOpen source

Crawls locally, calculates a quality score and tells you what to fix first; almost suspiciously on brief.

Versus paying: Its fix-first scoring is useful, but its prioritization and guided evidence are less polished than Sitebulb's.

Setup: Download a prebuilt desktop or CLI binary for Windows, macOS or Linux

Watch for: None for ordinary crawling; JavaScript rendering needs Chrome or Chromium, or the one-time headless-shell download

841 GitHub stars (checked Aug 6, 2026)

crawler.siteone.io →

03What you give up by leaving Sitebulb

  • rule depth, visualization, reporting, JavaScript crawling, and agency workflow
  • massive hosted crawl capacity
  • proprietary scoring
  • continuous monitoring
  • agency reporting and support

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.

04Questions

Is there a free alternative to Sitebulb?

Yes. This page compares 5: Crawly, FreeCrawl, LibreCrawl, SEOnaut and SiteOne Crawler. 4 of them are open source, so you can run them yourself.

How much does Sitebulb cost?

$18/mo on the Lite plan (monthly), which is $216 a year. Prices checked Aug 14, 2026.

What do you give up with a free alternative to Sitebulb?

Most often: rule depth, visualization, reporting, JavaScript crawling, and agency workflow, massive hosted crawl capacity, proprietary scoring and continuous monitoring. Each alternative on this page lists its own gap under “Versus paying.”

Can AI build me my own version of Sitebulb?

Half-bot. 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.

Prices change; confirm on the vendor's site before you decide.