The Chilkat Perl HTTP library provides an advanced API for sending HTTP/HTTPS GET and POST requests and HTTP/HTTPS uploads. Advanced features include cookies, caching, redirects, proxies, authentication, and custom headers. The Chilkat components and libraries have an established user base of approximately 10,000 customers. Chilkat's licensing provides for free new-version upgrades, 1 year unlimited email and phone support, and royalty-free redistribution.