PGJDBC-NG is an implementation of the JDBC for the PostgreSQL server. It aims to support the complete JDBC 4.1. Specifically, it supports the advanced UDT features of JDBC which the current driver lacks. It's implemented using an asynchronous I/O library (Netty), which allows it to support other advanced features like asynchronous notifications.
Midao is a framework that was created to simplify development with JDBC. It shields developers from the nuances of vendor JDBC implementations and provides standard JDBC boilerplate code. It is flexible, customizable, and simple and intuitive to use, and provides a lot of functionality: transactions, metadata, type handling, profiling, input/output processing/converting, pooled datasource library support, named parameters, multiple vendor support out of the box, custom exception handling, and overrides. With a single Jar, it supports both JDBC 3.0 (Java 5) and JDBC 4.0 (Java 6). It is well tested, with over 500 unit and functional tests, and is also tested with the latest drivers for Derby, MySQL (MariaDB), PostgreSQL, Oracle, and Microsoft SQL.
nf1db is an in memory database engine with SQL and JDBC interfaces. It supports transactions, commands from the SQL-2003 standard, all major data types, a number of functions, default and null values, auto-increments, constraints, primary and foreign keys, set operations, implicit and explicit joins, nested SELECT statements, quantity limits in SELECT statements, and much more.
ERDesignerNG is a Java-based entity relationship design and database modeling tool. It has a powerful WYSIWYG interface for physical database design, supports 2D and 3D database modeling, browsing, and design, handles tables, relations, indexes, and comments, supports a central repository for all models (Model Repository), supports subject areas, supports domains, supports MySQL, Oracle, Microsoft SQLServer, PostgreSQL, and H2, creates the SQL DDL statements for schema creation, has an integrated schema version control system, can generate schema migration scripts for every change, stores the database definition as XML files for further processing, can export the database schema as GIF, BMP, JPEG, or SVG files, has an integrated reverse engineering module for existing schemas, has a build in schema compare feature, can generate schema documentation as PDF, HTML, RTF, and other formats, and supports schema conversion between different dialects.
websqlclient (WSQLC or wiskl) is a lightweight HTTP server which allows an end user to access JDBC data sources via automatically-generated data entry screens. It is designed to be used with standard Web browsers and wireless tablet PCs, and is highly configurable. It can connect to any JDBC data source. Its main purpose is to provide rapid data-model-driven development. The websqlclient data entry forms are generated by querying the database system table information, but can be configured manually. websqlclient includes a database-agnostic data loading utility (SQLLoader), a data unloading tool (SQLExport), and SQL scripting capabilities.
BitNami JRubyStack provides a fast, easy way to develop and deploy Ruby on Rails applications on a Java runtime using JRuby. It includes JRuby, Rails, Java, Tomcat, the GlassFish gem, MySQL, and Subversion. It supports Windows, Linux, and Mac OS X, so you can share the same Rails environment on multiple platforms.
StelsXML is a JDBC type 4 driver that allows you to perform SQL queries and other JDBC operations on XML files. It allows you to easily access data contained in XML documents using the standard SQL syntax and XPath expressions. The driver is completely platform-independent. It supports most keywords of ANSI SQL'92, XPath expressions for defining tables and columns, inner and outer table joins, aggregate, numeric, string, conversion, and user-defined SQL functions.