Great simple proxy selector Rated 4 out of 5 stars
Lightweight proxy selector. Does exactly what it says. Very nice tool. The earlier reviews about a lack of a "No Proxy" setting have already been fixed and is added by default.
Contains a not-that-important bug [when running 4.0 on Mac OS X version 10.6.7] -- if you add the toolbar button, its drop-down does not contain the list of proxies. (It does contain the "Manage Proxies" and "Preferences" options.) The proxy selector does work well from the context menu, however.