http header

HTTPort allows anyone to use Internet services from behind an HTTP proxy.

Easy to use HTTP proxy-server with support for authentication to organize.

Okapiland Explorer is a personal HTTP server between sites and your browser.

FREE FTP Client Powerful FTP/HTTP Fast and Easy Download Manager

TamperData is an extension to track and modify http/https requests.

Send your mail through http proxy but not only the mail proxy

Provides HTTP Headers, response time and content for any queried URL

Packet analyzer with HTTP file capture and a neat Graphical Packets Mode. Free.

FREE FTP Client Powerful FTP/HTTP Fast and Easy Download Manager

The BdProxy acts as a SOCKS, HTTP, and HTTPS proxy server