Squid is a versatile caching proxy for the Web, supporting HTTP, HTTPS, FTP, and more. By caching and reusing frequently-requested web pages, it reduces bandwidth usage and improves response times. With extensive access controls, Squid serves as an excellent server accelerator and runs on various operating systems, including Windows, under the GNU GPL license.
Widely utilized by Internet Providers worldwide, Squid optimizes data flow between clients and servers, enhancing performance and conserving bandwidth. Additionally, it can route content requests to servers in diverse ways, enabling the creation of cache server hierarchies to optimize network throughput.