Developer Tools vs Sitebulb

devtools.tr is a free toolbox of 173 web and developer tools for webmasters, developers and system administrators. Every check runs live against real servers: DNS lookup, SSL/TLS and security headers, website analyzer with PDF reports, SEO and Core Web Vitals, TTFB, CDN and compression tests, IP geolocation, WHOIS, ASN and blacklist checks. Developer utilities include a JSON formatter and validator, regex tester, Base64, UUID, SQL/HTML/CSS/JS formatters and minifiers. Results come as clear reports with scores and ready-to-paste fixes for Apache, nginx and Cloudflare. No sign-up, no limits, fully in English and Turkish, and works on mobile.

Sitebulb is a website auditing crawler from a UK-based company, built for technical SEOs and agencies. Like other crawlers it scans a site the way a search engine would, but its focus is on explaining and prioritizing issues rather than presenting raw data, which makes findings easier to understand and to communicate to clients and developers.

Each audit produces Hints: prioritized issues with plain-language explanations of why they matter and how to fix them. Visual crawl maps, charts and reports show site architecture, internal linking and indexability at a glance. Sitebulb renders JavaScript with a headless Chrome engine and compares rendered and raw HTML, and audits cover structured data, accessibility, page speed, international SEO and duplicate content. The desktop app runs on Windows and Mac with Lite and Pro licenses limited by URLs per audit, while Sitebulb Cloud crawls very large sites on remote servers and lets teams share audits.

Sitebulb fits SEOs and agencies who want actionable, explainable audits and client-ready visuals. Screaming Frog offers more flexible custom extraction and configuration and remains the default for power users, so many professionals use both. Desktop crawls of large sites consume significant memory, and the cloud version is a sizeable step up in price. Lumar and Botify target enterprise-scale continuous monitoring, while Semrush and Ahrefs site audits are simpler options bundled with broader SEO suites.