1. install
brew install tor
brew install privoxy
2. copy and modify config file
cp /usr/local/Cellar/config /usr/local/opt/privoxy/sbin/
// add this following line into config file, it means forward filtered data to Tor.
forward-socks4a / 127.0.0.1:9050 .
3. launch
./usr/local/opt/tor/sbin/tor
./usr/local/opt/privoxy/sbin/privoxy
4. check if listen
netstat -an | grep 9050
127.0.0.1:9050 LISTEN
netstat -an | grep 8118
127.0.0.1:8118 LISTEN
5. web browser settings
Manually set your proxy configuration, fill HTTP and SSL Proxy column up with "127.0.0.1:8118".
6. try