Basically, what I'm looking for is this: http://www.amazon.it/gp/product/B00USRJX1W/ref=s9_simh_gw_p147_d0_i6?pf_rd_m=A11IL2PNWYJU7H&pf_rd_s=desktop-1&pf_rd_r=102M5H9ESG5EAC11BWNP&pf_rd_t=36701&pf_rd_p=577208427&pf_rd_i=desktopieGeek® ORVIBO Smart Wall Socket
... but without a proprietary app. I just want something open and "general purpose" like with a REST API interface to pilot it with my RPIRPi (e.g. with a Python script), without the need to hack it :).