jPersist is an extremely powerful, light-weight, object-relational database persistence API that manages to avoid the need for configuration and annotation; mapping is automatic. jPersist uses JDBC and can work with any relational database and any type of connection resource. jPersist uses information obtained from the database to handle mapping between the database and Java objects, so mapping configuration is not needed, and annotation is not needed, in fact there is no configuration needed at all.
This project contains Naive and Fishers bayesian classifiers, as described in Toby Segaran's book "Programming Collective Intelligence." The book has python implementations; this is a Java implementation.
Raphaël is a small JavaScript library that should simplify your work with vector graphics on the web. If you want to create your own specific chart or image crop and rotate widget, for example, you can achieve it simply and easily with this library.
ITK is a powerful open-source toolkit implementing state-of-the-art algorithms in medical image processing and analysis. MATLAB, on the other hand, is well-known for its easy-to-use, powerful prototyping capabilities that significantly improve productivity. With the help of MATITK, biomedical image computing researchers familiar with MATLAB can harness the power of ITK algorithms while avoiding learning C++ and dealing with low-level programming issues.
The MLib (pronounced "M-Lib") is a C software framework that significantly simplifies the development of highly reliable system-level libraries and programs (like daemons/services). It is small, efficient, robust and highly portable, and was designed primarily for embedded systems. (From the FreeType project)
J. Schulte, T. Hampel, M. Gießmann, F. Ferber, and K. Stark. DeLFI 2008: Die 6. e-Learning Fachtagung Informatik, 978-3-88579-226-0, page 101--112. Gesellschaft für Informatik e.V. (GI), Silke Seehusen and Ulrike Lucke and Stefan Fischer, (September 2008)