I have no clue if such tool exists and if it exists, how it's called but I'm looking for an abstraction layer above a HTTP proxy.
Currently I'm working as a consultant at a few companies and all of them use a proxy. It's really a configuration hell if I have to reconfigure all proxies (some are using the system proxy but some can't) every time I switch from company to company.
So I'm looking for a tool, for example a localhost "proxy daemon" or how it's called so I just configure all tools to use that localhost HTTP proxy and I only have to configure that localhost proxy to use the correct company proxy. It would save a lot of time since I only have to configure it once.
It would even be greater if the tool could automatically poll all proxy servers and choose the correct proxy server depending on the available proxy servers.
I'm using Ubuntu, so it might even be harder to find such a tool.
So my question is, are there such tools? How do you call such a tool? Any suggestions?