sshh is a set of two daemons that allows you to maintain a TCP connection if all you have available is an HTTP proxy. It is similar in functionality to httptunnel, but has a few more features. Once you have it set up, sshh will allow you to make connections forward through the proxy or backwards through it, so you can open connections in either direction.
sec-wall is a feature-packed security proxy that supports SSL/TLS, WS-Security, HTTP Auth Basic/Digest, extensible authentication schemes based on custom HTTP headers and XPath expressions, powerful URL matching/rewriting, and an optional header enrichment. It's a security wall with which you can conveniently fence otherwise defenseless backend servers.
UDP IPTV to RTSP proxy is a lightweight GNU/Linux daemon which, being installed on a LAN router, provides on-demand access to UDP multicast streams via RTSP, RTP, and HTTP unicast protocols. The server itself does not support streaming of any files, it only can receive incoming multicast streams provided by your ISP and retransmit them to interested local clients. The main purpose of the software is to provide simple IPTV service to small office or home ethernet and/or Wi-Fi LANs where upgrading the network to handle multicast correctly is not an option. It is not intended to handle large-scale installations and service clients you don't trust (like the public Internet).
pymiproxy is a small, lightweight, man-in-the-middle embeddable proxy capable of performing HTTP and HTTPS (or SSL) inspection. The proxy provides a built-in certificate authority that is capable of generating certificates for SSL-based destinations. Pymiproxy is also extensible, and provides two methods for extending the proxy: method overloading and a pluggable interface. It is ideal for situations where you're in dire need of a proxy to tamper with out- and/or in-bound HTTP data.
nassh-relay implements a relay server used with the Secure Shell (hterm) plugin for the Chromium Web browser. It tunnels ssh traffic through an HTTP xhr or websockets connection. It could be used as a gateway to route traffic to an internal network (it supports authentication on the HTTP endpoint) or simply as an ssh-over-HTTP proxy.