We are developing a new privacy tool where you can find working proxies with one click. Later versions will also allow you to doubleclick the result to use the selected proxy for all outgoing connections.
This will work for browsers and other apps (even if they don't offer proxy support)
Currently you can only search working proxies, select where to crosscheck them and manually add them to your browser or other apps which support proxies.
If you want to help testing this software please download
and report any problems here.