Side by side
Crawler Log Analyser vs LogLens
Both stand on seo log file analysis tools. Which one you can start free with, which one lets you read the code, and what each costs once you pay.
Free plan LinuxSelf-hosted
Choose Crawler Log Analyser if you operate a self-hosted static site on nginx and need crawler-focused log reports or CI signals. Look elsewhere if you need Apache or IIS support, hosted dashboards, or integrations such as Slack, Prometheus, or Elasticsearch.
Visit Crawler Log Analyser
Free plan APISelf-hostedWeb
LogLens combines log analysis with crawler, SEO, and security monitoring, and includes a no-card trial plus a free tier. Compare request quotas, alert intervals, and history length against your monitoring needs.
Visit LogLensThe facts
| Crawler Log Analyser | LogLens | |
|---|---|---|
| Free plan | Yes | Yes |
| Open source | Not published | Not published |
| Runs on | Linux, Self-hosted | API, Self-hosted, Web |
| Lowest paid plan | Not published | Solo: $19 a month |
| Plans published | None | 6 |
| Maker | Not published | Not published |
| Website | github.com | loglens.ai |
| On seo log file analysis tools | #8 of 27 | #4 of 27 |
Crawler Log Analyser: what it does well
- Reads combined and extended seo_crawl nginx logs, including rotated .gz files.
- Classifies search and AI crawlers and assesses crawler health.
- Flags several crawler-visible issues around deployments.
- Produces text, Markdown, and JSON reports.
- Can signal critical findings with a non-zero exit code.
What to know first
- Linux only, with no stated Apache or IIS support guarantee.
- Requires Python 3.11 or later and nginx logs.
- No Slack, Prometheus, Elasticsearch, or SaaS integrations.
- Feature work is frozen through 31 August 2026.
LogLens: what it does well
- Checks claimed bots against published IP ranges
- Connects crawler activity with sitemaps and Search Console
- Uploaded logs do not count against monthly request quota
- Trial lasts 14 days and requires no credit card
- Alerts identify affected IPs, paths, and crawlers
What to know first
- Free plan limits history to 30 days
- Free alert cadence is hourly
- Data is deleted seven days after trial expiry unless account is claimed
- Paid overage protection costs $2 per extra million requests
Alternatives to Crawler Log Analyser Alternatives to LogLens The whole list