patchbay : patchbay.pub is a free web service you can use to implement things like static site hosting, file sharing, cross-platform notifications, webhooks hand...
HTTP Archive : The HTTP Archive tracks how the Web is built.
HTTP Security Report : Get an instant report of how your website measures up to the best practices.
Check connection encryption, content security, information disclosure and...
Differentiate HTTP headers and content body of two GET URLs.