CrawlZilla vs SEO PowerSuite

CrawlZilla is a cloud-based SEO crawler for technical site analysis, available on the web and through an API. Its Spider, List and Subdomain modes can crawl HTML, images, JavaScript, CSS and PDFs. Each URL can include more than 40 data points, such as titles, canonicals, hreflang, schema and Open Graph information. An internal-link graph tracks links to help identify orphan pages and show PageRank flow; headless Chrome renders JavaScript pages. Lighthouse audits report Performance, Accessibility, Best Practices and SEO scores, plus Core Web Vitals. Page Monitor checks URLs on a chosen schedule, detects changes across 12 or more SEO fields and can send email alerts. Its REST API uses HTTPS, returns JSON and authenticates with bearer tokens. The free plan allows 10,000 URLs per session, 10 requests per second, three Lighthouse audits per crawl and 20 monitored URLs. Premium is £39.99 a month, with limits of 1,000,000 URLs per session, 20 requests per second, 10 Lighthouse audits per crawl and 500 monitored URLs. The maker says its distributed cloud infrastructure supports crawls of 100 million or more URLs and requires no installation or server management.

SEO PowerSuite combines keyword research, rank tracking, site audits, backlink analysis, and competitor research. API access is listed, and API is the specified platform. The suite is offered on a freemium basis, with a free tier available for as long as you want. That tier is limited to one project, 500 URLs, 1,100 backlinks, and one competitor per project. Professional costs $349 a year and lists unlimited projects and keywords, five competitors per project, a 216M-keyword database, and a 6.5T backlink index. Enterprise costs $599 a year, while Max costs $899 a year; both list unlimited projects and keywords, 40 competitors per project, and the same database and index sizes. The maker is SEO PowerSuite, founded in 2004 and headquartered in Nicosia, Cyprus. Its website is link-assistant.com. The stated plan details make the differences in project, competitor, keyword, and backlink capacities explicit, while all paid options are billed annually.