Squrelayerproxy is a project aimed for adding more privacy for existing messengers, proxy and security features. For windows you have a free and good HTTP proxy and in linux we have a shell-wrapper based on provocation-answer customizable secret algorith
Service proxy provides a simple system daemon allowing two TCP services, such as SSH and HTTPS, to listen on the same port, allowing SSH connections to pass through restrictive free wifi point firewalls and proxies often found at coffee shops and hotels.