From Initex Software:
Proxifier allows network applications that do not support working through proxy servers to operate through a SOCKS or HTTPS proxy and chains. Features include work with any Internet client through a proxy, improve network performance or ensure privacy, easy yet powerful UI with live data, and up to date with new technologies.
Other features include proxifier can process all outgoing TCP connections, full IPv6 support, tunnel IPv4 connections through IPv6 proxy and vice versa, SOCKS 4 and SOCKS 4A (hostnames support) with User ID authentication, HTTPS with Basic and NTLM authentication, proxy failure is transparent for the client application if redundancy is enabled, selected proxies in the chain can be enabled or disabled, convenient UI that allows chain creation and reordering with drag-and-drop, system DNS and DNS over proxy modes, automatic DNS mode detection, and proxification rules can be based on application names, IP addresses, hostnames, and port numbers.
What's new in this version:
Version 3.21 has added full support for Windows 8 desktop applications.