The EU-funded project ReAAL aims at assessing the impact of common open platforms on the market penetration in the domain of active and independent living. For this purpose, nine different piloting initiatives involving over 5000 users in six European countries are porting different AAL applications and services to universAAL, the open source software platform for AAL systems, as their common open platform. In order to enlarge the project impact and involve more stakeholders participating in the assessment, the ReAAL project has recently decided to issue an open call for "associated pilots".