WebSniffer Alternatives

Modify Header Value (HTTP Headers) is a browser extension that allows you to add, modify or remove a header for any request to your preferred domains.

HTTP-Repeater (HTTP/s Live Headers) (Beta) is a browser extension that lets you capture browser requests and repeat the process in a loop automatically.

All-in-One Cloud SEO Software: Tailored for SEOs, Agencies, and Web Professionals.

Try for free freemium $19.0 / Monthly

Sky Live HTTP Headers is an open-source browser extension that visually displays HTTP requests and response headers from every website you visit.

HTTP Header Spy is a browser extension that allows you to inspect the request and response header of any website URL.

HTTP-TRACKER is an advanced browser extension that allows you to examine HTTP request headers, cookies, response Headers, website data, cookies and modify request headers before sending them.

Smart Header is a browser extension that lets you manipulate the HTTP request headers and response header automatically.

HTTP Header Analyzer is an open-source browser extension that allows you to see and analyze the current HTTP request and response header from the website URL.

View HTTP header response for any web page.

Displays the HTTP header. Edit it and send it.

Get started with Google Chrome's built-in web developer tools.

Examine, edit, and debug HTML, CSS, and JavaScript on the desktop and on mobile.

HTTP Header Checker Tools

Open Source free

Code Cola is a chrome extension to editor online pages' style visibility.