We propose here links to useful (free) software libraries and APIS for the development of Multimedia and Visual Information Systems and for the collection of large corpora of images/videos/data.

• Open CV: The Open Computer Vision Library
• R: Statistical Computing
• Weka Data Mining Software
• SOM Toolbox
• SNNS: Stuttgart Neural Network Simulator
• SVM^light: Support Vector Machine Library
• Lucene: Apache's search software (see also Solr)
• Oracle Berkely DB
• Lemur: Language Modeling and Information Retrieval
• Sphinx search: open-source SQL full-text search engine
• CMU's Sphinx speech recognition toolkit

• Flickr API
• YouTube APIS
• ImageNet API
• LinkedIn API
• …
• ProgrammableWeb API listing