Oncrawl vs Screaming Frog SEO Log File Analyser

Oncrawl is a technical SEO analysis platform that combines website crawl data, server logs, and performance metrics. Its crawler examines site structure, content, performance, and internal linking, supports JavaScript rendering, and is described as handling millions of URLs. The Log Analyzer shows how search engines, AI bots, and users interact with a site through real server logs. Teams can schedule crawls, compare results, and receive alerts about technical changes or regressions. AI bot monitoring and analysis lenses address AI search visibility and content quality at scale. Connectors include Google Search Console, GA4, Majestic, and Piano; logs can be ingested from Cloudflare, Google Cloud Platform, AWS, Azure, or direct files. The REST API can trigger crawls, manage projects, and export data to BI tools, warehouses, Google Data Studio, and Dataïku. Oncrawl states ISO 27001, SOC 2 Type I and II, GDPR, and CCPA compliance. Pricing is quote-based.

Screaming Frog SEO Log File Analyser is a desktop application for examining access logs and understanding search engine and AI bot activity. It installs locally and keeps log event data in a local database. It accepts Apache, W3C Extended, and Amazon Elastic Load Balancing logs, and can verify supported bots to identify spoofed requests. Reports cover crawled URLs, crawl frequency, response errors, redirects, bytes downloaded, and response times. Users can match imported data containing a URLs column against log activity, including crawls, directives, or external link data. Log files can be added by drag and drop, with analysis exported to CSV or Excel. The software can process millions of events, though capacity depends on hard drive space. It runs on Linux, macOS, and Windows. The free plan allows 1,000 log event lines and one project. The paid licence costs $139 per year and includes unlimited events and projects, subject to storage capacity. Free technical support is listed for both versions.