The Heterogeneity Alliance aims to join efforts of organizations interested in the development of future technologies and tools to advance and take full advantage of computing and applications using heterogeneous hardware. The alliance will focus on all phases of hardware and software heterogeneity, from design time, to enhanced execution, parallel programming and optimized runtime and consider a number of factors such as energy, performance, real-time, data locality and security. This will enable a new way of development and execution of next-generation applications. The alliance main goal is to establish an organization in which anyone interested in the technological areas that are initially part of its scope can participate and collaborate pursuing a common objective: founding a common, open-source and an extendable set of technologies and tools around the development for heterogeneous hardware, which can be viable for mass adoption utilizing technologies created by the alliance members and attractive, easy to use and broader in scope and value. The alliance is currently working on the establishment of a reference architecture with current alliance members and is creating an online catalogue of tools and technologies. If you are interested, please visit us at www.heterogeneityalliance.eu