Web.de Smartsurfer to save money
The Smartsurfer program is intended to reduce Internet costs with immediate effect. It works as follows: the program integrates itself into the Windows dial-up network and then uses an integrated table to look up which call-by-call provider is currently the cheapest.
The latest call-by tariffs -Call providers can be updated weekly or every time they dial. Since such an update is only 40 kb in size, it shouldn't take long to be up to date again. The only consideration is that you are forwarded to web.de when dialing in.