ProxyCap enables you to redirect your computer's network connections through proxy servers. You can tell ProxyCap which applications will connect to the Internet through a proxy and under what circumstances.
Proxycap vs Proxifier opinions
An open-source command-line program for Mac OS X to make any app work through a proxy server. Proxifier can redirect all network traffic in your system to a proxy server and redirect specific apps to work through a proxy server.
Proximac vs Proxifier opinions