Homeopathy is effective according to Swiss federal report
This is just a short taste of a report recently published and translated into English. A longer version with references can be found here.
Interestingly, the HTA methodology, unlike meta-analyses and systematic reports such as the Cochrane Collaboration, does not just ask the question of effectiveness of a particular intervention, it also addresses the questions of effectiveness of a therapy in everyday use (i.e. real world effectiveness), how it is used, its safety and its cost-effectiveness.
This report, amounting to 300-plus pages, exhaustively reviews the scientific literature in homeopathy. It summarises 22 reviews, 20 of which show positive results for homeopathy. Four of these showed strong evidence that homeopathy, as a system of medicine, is efficacious. It also finds strong supporting evidence for the homeopathic treatment of allergies and upper-respiratory tract infections.
There is more information here and here