I like the no-nonsense approach of foxyproxy. Does exactly what it advertises - switching proxies quickly based on URLs. I like both automated proxy switching as well as the manual mode - sometimes we know which proxies are working and which are not. Review collected by and hosted on G2.com.

nothing much. A nice little software to get the job done. Maybe it could have a nifty little analytics interface which said which proxies worked most of the times, and hence put in some intelligent recommendations. But the development team will need to be sure not to overcomplicate things while doing that. Review collected by and hosted on G2.com.