Tool category
Log Analysis
Log analysers read server logs to show what search engines actually crawled — as opposed to what you assume they crawled. Still the most under-used data source in technical SEO.
5 tools · 5 free or with a free tier · 4 more cover this area as a secondary feature
| Tool | What it does | Pricing | From | HQ |
|---|---|---|---|---|
| Elastic Stack elastic.co | Open-source search and observability stack (Elasticsearch, Logstash, Kibana) commonly self-hosted to ingest and visualise server logs for crawl budget analysis. | Open Source | — | Netherlands |
| GoAccess goaccess.io | Open-source real-time web log analyser and interactive viewer that runs in a terminal on Unix-like systems or renders an HTML dashboard in the browser, with JSON output for further processing. | Open Source | — | — |
| Screaming Frog Log File Analyser screamingfrog.co.uk | Desktop application for importing and analysing server log files to study search engine crawl behaviour, response codes and crawl frequency by URL. | Freemium | — | United Kingdom |
| Seolyzer seolyzer.io | Log analysis and crawl monitoring service that streams server logs to show real-time search engine bot activity, crawl budget and page category performance. | Freemium | — | France |
| Splunk splunk.com | General-purpose machine data platform used by some SEO teams to index and query large volumes of server logs for crawl analysis. | Enterprise | — | United States |
Also covers log analysis
These tools are catalogued under another primary category but include log analysis functionality.
Other categories
GEO AI Visibility (47)All In One (32)Crawler (17)Analytics (15)Content Optimization (15)Keyword Research (15)Page Speed (15)Rank Tracking (14)SERP API (13)Browser Extension (12)Free Utility (12)Local SEO (10)Reporting (10)AI Writing (9)WordPress (9)Digital PR (8)Technical SEO (7)Backlinks (6)Schema (6)Ecommerce SEO (4)Internal Linking (4)Enterprise (3)