Querydsl is a framework that enables the construction of statically typed SQL-like queries. Instead of writing queries as inline strings or externalizing them into XML files, they can be constructed via a fluentDSL/API like Querydsl. It supports JPA, JDO, Java Collections, SQL via JDBC, Lucene, and Hibernate Search.
Probus is a Web framework for developing in PHP5. This framework is based on the MVC pattern. It has excellent support data caching and provides convenient AJAX support. This framework supports the following features: Many programming patterns can be used, include MVC. A simple command-line tool is used to generate projects. Standard plugins are included for AJAX, RSS, and form validation. It is simple create new plugins for Probus. Its database abstraction layer supports MySQL, PgSQL, MSSQL, Oracle, and many others. It automatically caches data. Its configuration system uses YAML syntax. Components can be used from external frameworks such as Zend Framework, symfony, Code Igniter, Kohana, and CakePHP.
lib4d_sql is a C library that provides the required functions (connect, prepare, execute, etc.) for writing an SQL client for 4D databases. It uses the public 4D SQL protocol, which is supported by 4D products since version 11. It is already used by the PDO_4D Open Source project, and it might be used to provide others drivers for JDBC, ADO, or ActiveRecord.
Processdsn consumes RFC 3464 delivery status notification email messages, writing a summary of the notification to a SQL database. Notifications may indicate successful delivery, a delay in delivery, or delivery failure. The database is designed to be exposed restfully by the mod_processdsn module for Apache httpd, but can queried directly if necessary.