This post describes how to setup a local SSH tunnel to a remote server and configure Mac OS X to use that tunnel as a SOCKS proxy. Tested on Mac OS Sequoia 15.2.
Tunnelblick comes as a ready-to-use application with all necessary binaries and drivers (including OpenVPN, easy-rsa, and tun/tap drivers). No additional installation is necessary — just add your OpenVPN configuration and encryption information.