How to make multiple tunnels to localhost:port without authorization from proxy with authorization?

Question

Computer networks

Interested in how it is possible in Windows to make a lot of tunnels to localhost on different ports from proxies with authorization, so that local ones would be without authorization by password / login.
For example, this situation: there is a program that works with a large number of proxies. But she does not know how to work with a proxy with authorization. It is necessary through some program or somehow to redirect traffic from local ports to a proxy so that authorization takes place automatically. Those. in the end, what would be possible to give the program a proxy in the format localhost:20000, localhost:20001, localhost:20002, localhost:20003, etc. Each port clings to a different proxy.

Answer 1

handycache.ru - supports external (non-socks) proxy with authorization, you can run multiple instances if each one is set to its own port.

Answer 2

Not convenient if there are a lot of proxies. Maybe there are some other similar programs, but for a larger number?