github.com/x-way/crawlerdetect (go): Package crawlerdetect provides a Go version of the https://github.com/JayBizzle/Crawler-Detect PHP library It can be used to detect crawlers based on their HTTP User Agent header  Here is a simple example  To use custom patterns a dedicated instance can be created:
Keywords: bot-detection|crawler|crawler-detection|detect|go|spider|user-agent