What are the crawler tools?

Crawler tools include: 1. OutWit Hub; 2. ParseHub; 3. Visual Scraper; 4. Scrapinghub; 5. Fiddler; 6. Wireshark; 7. Anyproxy; 8. cURL, etc.

Crawling tools include:

1. OutWit Hub: Firefox plug-in with dozens of data extraction functions to simplify web searches. After browsing the page, the extracted information is stored in a suitable format. It is one of the simplest web crawler tools that can be used freely, providing convenient extraction of web page data without writing code.
2. ParseHub: Supports the use of AJAX technology, JavaScript, cookies, etc. to obtain web page data. Its machine learning technology can read, analyze and convert web documents into relevant data.
3. Visual Scraper: Another great free and no-coding scraper tool that collects data from the web with a simple point-and-click interface. Real-time data can be obtained from multiple web pages and the extracted data can be exported to CSV, XML, JSON or SQL files.
4. Scrapinghub: A cloud-based data extraction tool that helps thousands of developers obtain valuable data.
5. Fiddler: A powerful HTTP debugging tool that can view all HTTP requests and responses, and modify request data and response data.
6. Wireshark: A network protocol analyzer that can capture network packets and analyze them.
7. Anyproxy: An HTTP proxy server that can receive HTTP requests and forward them to the target server, while recording request and response data.
8. cURL: A file transfer tool that uses URL syntax to work under the command line. It supports file upload and download, so it is a comprehensive transfer tool, but according to traditional custom, cURL is called a download tool. It also includes libcurl for program development.

Additionally, the online JavaScript Beautifier website can format code for easier reading and debugging. These tools can assist in the running and debugging of crawlers, but which tool to choose needs to be decided based on specific needs and scenarios.

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