ARSperl is an integration kit for Perl5 and Remedy ARSystem API. It provides a large subset of the functionality found in the ARS C API
https://github.com/jeffmurphy/ARSperl
Dataman is a fully multi-threaded database server and client API libraries in C, C++, Java, and a PHP module has now been added as well. This is a 'direct access' database, not a relational one. It emulates the verbs of the EDITOR language.
db4o is the world's leading open source object database for Java and .NET. Leverage fast native object persistence, ACID transactions, query-by-example, S.O.D.A object query API, automatic class schema evolution, small size (http://developer.db4o.com)
Full featured AJAX web based reporting system. Written in Java / JSP. Web based reports are dynamically generated from JDBC result sets. Connects to any JDBC compliant database, most drivers already included. The Apache Derby database is embeded.
The ReachOut Project is designed to be a full framework for dynamic service hosting. This will include development of the core framework for both the client/server along with a modular API implimentation to allow for various modules which can be