The web crawler or popularly known as a’spider,’ is an automated that skims through the internet for information. The Crawler usually surfs the internet and follows links, and explores various web pages to gather or “scrape” up any information. Port Scanners: This is a type of website scraper tool that quickly gathers accurate information about a specific target in an isolated network environment. Vulnerability scanners: This type of tool is used to scan and find any exposure to a specific system.
Source: https://thehackernews.com/2020/09/zenscrape-simple-web-scraping-solution.html