Añadir a SilverBullet, etc... proxys automáticamente es fácil, solo hay que añadir la url (api) y listo.
URL´s API:
HTTPs:
https://api.proxyscrape.com/?request=displayproxies&proxytype=http&timeout=10000&country=all&ssl=all&anonymity=all
Shocks4:
https://api.proxyscrape.com/?request=displayproxies&proxytype=socks4&timeout=10000&country=all&ssl=all&anonymity=all
Shocks5:
https://api.proxyscrape.com/?request=displayproxies&proxytype=socks5&timeout=10000&country=all&ssl=all&anonymity=all
Todos:
https://api.proxyscrape.com/?request=displayproxies&proxytype=all&timeout=10000&country=all&ssl=all&anonymity=all