The integration of third-country nationals is one of the most important topics for governments and policy makers in the European Union and has risen in prominence on the agenda because it is seen as one of the most visible challenges of globalization. UniteEurope aims at building scalable and flexible Social Media monitoring and decision support tools enabling sustainable integration policies and measures. After the collection of citizen generated content and mass data related to integration issues out of Social Media and already existing participation platforms an intelligent filter and aggregation architecture delivers relevant information for policy makers. An integration issue grid model with multi-layer logic patterns is used for consistent categorisation of relevant integration areas (e.g. education, business, culture) in cities. Coherent layers with multilingual semantic tags, significant sources and parameters are used for the logical core of the tool. Supported with information on web-based dashboards with intuitive visualisations, local decision makers can initiate effective and efficient integration measures and policies. An integrated decision support system suggests adequate measures in case of critical integration issues. Users of the UniteEurope tool can save, monitor and track specific cases to measure impacts and to predict the effect of future decisions. Additionally, identified target groups and policy makers at European level are provided with aggregated data and key figures to monitor urban integration in Europe and identify good practices for specific areas of integration. UniteEurope supports operational integration measures and strategic policy development at regional and pan-European level. The UniteEurope team consists of system architects, software developers, E-Government, Social Media and integration experts from leading universities, competence centres, companies and three European cities considering integration an agenda priority.