Proxymini is a proxy server that fully supports HTTP, HTTP CONNECT (for HTTPS and so on), SOCKS4 (TCP and TCP bind), and SOCKS5 (TCP, TCP bind, and UDP). It's designed to be small, and for being used in trusted environments where there is no need for complex or advanced options. Double-click on it and it will work immediately. It supports some options like the binding of a specific interface for incoming or outgoing connections, a custom port to bind (the default is 8123), and stdout and file verbose logging.
Apache's mod_rewrite provides methods to map values to attributes using the directive RewriteMap. One not so well known feature of mod_rewrite is to extend this functionality with internal functions, which can be defined in a seperate Apache module. mod_icpquery is an Apache-2.0/2.2 compatible module that extends mod_rewrite by internal RewriteMap functions. It sends out a request as a UDP query to a list of Unicast or multicast addresses. This query conforms to RFC 2186, also known as ICP, and can be handled by various HTTP-caching servers such as squid. A cache-server handling ICP should reply to an ICP query with an ICP response indicating if it holds the desired object in its cache or not. This information can be further processed by mod_rewrite using its superb regex rules.
PC/SC-Proxy allows for access to PC/SC daemons on remote machines. There are two use cases. It can be used with thin clients and a terminal server to make the session access readers connected to the thin client. In this case, the address of the remote PC/SC service is taken from the login information (utmp). The second use case is when applications running inside a virtual machine (e.g. VirtualBox) need access to card readers of the host machine without disturbing operations on the host itself.