Local-first technical-SEO crawler

Fast, modern web crawling in your desktop.

RacingRoach is a desktop app to help your SEO efforts by giving you crawling intelligence that is fast, modern and with lots of data.

Download free · Win / Mac / Linux See what it audits

Memory footprint in the MB, not GB 100% local, data never leaves your computer Extended free tier with a cheap unlimited license

Built for the audits that break other desktop crawlers.

90+ SEO checks JavaScript rendering Streaming CSV export Resumable crawls Windows · macOS · Linux

The problem

Big crawls shouldn't need a bigger machine.

Legacy desktop crawlers load the whole crawl into RAM. Halfway through a large site the memory bar turns red, the app crawls to a stop, and you're splitting the site into chunks or renting a bigger box. RacingRoach was built to make that failure mode impossible.

01 · Frontier

Bounded & backpressured

The URL frontier and fetch pipeline are bounded end to end. When storage is the bottleneck, crawling slows — it never balloons memory to keep up.

02 · Stream

Straight to disk

Every page record, link, and issue commits to an embedded database as it completes. The full crawl is never held in RAM — only a small working window is.

03 · Resume

Crash-safe by design

Each crawl is one reopenable file, written in single transactions. Close the app, lose power, come back tomorrow — reopen and keep going.

What it finds

A full technical-SEO audit, streamed live.

Ninety-plus checks across crawlability, on-page, structure, and content — every one written to disk as it's found, so you can start reading results before the crawl finishes.

Crawlability

Broken links & redirects

4xx/5xx errors with the pages that link to them, redirect chains and loops, and every hop resolved.

On-page

Titles, meta & headings

Missing, duplicate, too-long and too-short titles and descriptions, heading structure, and canonical issues.

Structure

Internal link graph

Crawl depth, orphan pages, internal link scores, and site-architecture views — computed across the whole crawl.

Rendering

JavaScript sites

Render JS-heavy pages and single-page apps to crawl the DOM users actually see, not just the raw HTML.

Validation

Structured data

Extract and validate JSON-LD and microdata, hreflang clusters, robots directives, and XML sitemaps.

Export

Streaming reports

Export any view — or the whole crawl — to CSV without loading it into memory. Reopen a saved crawl any time.

Local-first, permanently

Your crawl never leaves your machine.

RacingRoach is a desktop app, not a cloud service. There is no account to create, no crawl uploaded to someone else's server, no usage telemetry. When you audit a client's staging site, it stays yours.

No cloud tier, ever. Every crawl runs and stays on your device.
No telemetry. The app doesn't phone home about what you crawl.
No lock-in. Standard formats in, plain CSV out — your data stays portable.
SSRF-guarded. Private ranges and cloud metadata endpoints are blocked by default.

Pricing

Start free. Go unlimited when you scale up.

The free tier crawls real sites end to end, up to 1,000 pages per crawl. A $59.99/yr license removes the cap — every feature is already free, and it all stays 100% local.