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Multimedia analysis is an exciting and fast-moving research area. Unfortunately, historically there has been a lack of software solutions in a common programming language for performing scalable integrated analysis of all modalities of media (images, videos, audio, text, web-pages, etc). For example, in the image analysis world, OpenCV and Matlab are commonly used by researchers, whilst many common Natural Language Processing tools are built using Java. The lack of coherency between these tools and languages means that it is often difficult to research and develop rational, comprehensible and repeatable software implementations of algorithms for performing multimodal multimedia analysis. These problems are also exacerbated by the lack of any principled software engineering (separation of concerns, minimised code repetition, maintainability, understandability, premature optimisation and over optimisation) often found in research code. OpenIMAJ is a set of libraries and tools for multimedia content analysis and content generation that aims to fill this gap and address the concerns. OpenIMAJ provides a coherent interface to a very broad range of techniques, and contains everything from stateof- the-art computer vision (e.g. SIFT descriptors, salient region detection, face detection and description, etc.) and advanced data clustering and hashing, through to software that performs analysis on the content, layout and structure of webpages. A full list of the all the modules and an overview of their functionalities for the latest OpenIMAJ release can be found here. OpenIMAJ is primarily written in Java and, as such is completely platform independent. The video-capture and hardware libraries contain some native code but Linux, OSX and Windows are supported out of the box (under both 32 and 64 bit JVMs; ARM processors are also supported under Linux). It is possible to write programs that use the libraries in any JVM language that supports Java interoperability, for example Groovy and Scala. OpenIMAJ can even be run on Android phones and tablets. As it's written using Java, you can run any application built using OpenIMAJ on any of the supported platforms without even having to recompile the code.