There used to be several options available a couple of years ago but almost all of them have gone offline. It would nice to have more options again. Mine is a good baseline to go with. Runs with Nodejs and has no dependencies but is quite powerful.
Find the source code here: https://github.com/8chanAnon/Kraker-Local-Proxy-Server
You can promote your proxy server here: https://gist.github.com/jimmywarting/ac1be6ea0297c16c477e17f...