PBL (The Program Base Library) is a C library of array/linked list, hash/tree set, and key file functions that can be used in a C or C++ project. It is highly portable and compiles warning-free on Linux gcc, Windows Cygwin gcc, Mac OS X, and Windows Microsoft Visual C++ 2008 Express Edition.
Redstone Prevalent Storage is minimalistic prevalent storage for Java SE 5.0 that replaces the need for JDBC and an RDBMS for small and mid-sized applications. The library is comprised of an intentionally small set of concise interfaces and classes, and can be suitable for many types of applications where the data storage does not necessarily require an RDBMS. The library is heavily influenced by Prevayler and the Prevayler team (who should receive all credit).
Sequoia provides high availability and performance scalability for databases. It is is the continuation of the C-JDBC project. It provides transparent database clustering (partitioning, replication, etc.). It works with any Java application without code modification and with any database engine. It has been successfully tested with Tomcat, JBoss, JOnAS, WebSphere, MySQL, PostgreSQL, Apache Derby, HSQLDB, SAP DB, Oracle, DB2, Sybase, MS SQL Server, Firebird, and more.