[[Software-development::database-application-development]]

GapMea: GapMea is an opensource database design tool written in Qt/C++. GapMea is a visual tool written in C++/QT which helps to design and understand databases. It's based on a french data analysis method named "Merise" and produce beautiful shemas of database objects you have to deal with. Once finished you can generate sql code and paste it into your favorite Database Command Line Interface to generate database. You can save your design in an open xml file format to share it with your development team. Screenshots of schemas will bring better understanding of your data in your software technical documentation.

InfiniSQL: InfiniSQL is a distributed in-memory NewSQL relational database management system (RDBMS). It excels at performing complex transactions which involve records on multiple server nodes. It is engineered around the actor model of concurrent programming, which enables unique scalability capabilities. InfiniSQL is currently in an alpha state, and the project is eagerly seeking developers, early adopters, and people who want to help build a community around it.

Jam.py: Jam.py is an object oriented, event driven framework for development of database applications with hierarchical structure, modular design and very tight DB/GUI coupling. The server side of Jam.py is written in Python, the client utilizes JavaScript, jQuery and Bootstrap.

Lino: Lino is an extension to Django. It replaces Django's admin interface by a fundamentally different approach of designing a web user interface. It adds features like field injection and plugin inheritance to make plugins more reusable.

MESICON: Free software to assist in cataloguing challenging items in museum libraries (for example).

Midao: Goal of this data centric project - is to shield Java developer from nuances of vendor implementation and standard boilerplate code. Midao JDBC is created to simplify development with Java JDBC. It is flexible, customizable, simple/intuitive to use and provides a lot of functionality: transactions, work with metadata, type handling, profiling, input/output processing/converting, pooled datasource libraries support, named parameters, multiple vendor support out of the box, custom exception handling and overrides. With single jar it supports both JDBC 3.0(Java 5) and JDBC 4.0(Java 6). Midao JDBC is well tested, not only it has over 500 unit and functional tests, but also it is tested with latest drivers of: Derby, MySQL (MariaDB), PostgreSQL, Microsoft SQL and Oracle.

NextTypes: NextTypes is a standards based information storage, processing and transmission system that integrates the characteristics of other systems such as databases, programming languages, communication protocols, file systems, document managers, operating systems, frameworks, file formats and hardware in a single tightly integrated system using a common data types system. NextTypes is a relational/network/objects/files hybrid database system with high level SQL interface, extensive primitive types list, JSON/JSON-LD/XML/Smile/WebDAV/CalDAV/iCalendar/RSS data access, REST interface, customizable MVC architecture, optimistic concurrency control, HTML5/CSS3/SVG/Javascript responsive graphical interface, multilanguage, UTF-8 encoding, syntax highlighting or WYSIWYG editors, robots.txt and sitemap management, text extraction/fulltext search, document management, virus scanning, DoS/SQL injection/CSRF/XSS protection, passwords/X.509 certificates authentication, logging and backup system.

OfficeFloor: OfficeFloor provides true inversion of control for building simple static to complex real-time Web applications that are "build once, run anywhere" - even with cloud computing. It allows you to wire together a working prototype in minutes, extend the prototype to a working Web site in hours, and deploy and run anywhere. The code is self documenting to make support easier. It aims to be "The Java Web Answer" for rapid application development for Web applications.

Portofino: Portofino is a free and open source web framework that helps developers create outstanding enterprise applications by addressing three specific needs: productivity, features and architecture. Among its features: content management, CRUD, database connectivity, calendars, charts, security and easy customization using Groovy. A wizard allows the developer to create a web application by connecting to an existing database quickly and easily.

Relational pipes: Relational pipes are an open data format designed for streaming structured data between two processes. Simultaneously with the format specification, we are also developing a reference implementation (libraries and tools) as a free software. The tools are 1) Input filters that converts other formats (e.g. CSV, XML, fstab, filesystem…) to the relational format, 2) Transformations that allows filtering and modifications (of both content and structure) of relational data, 3) Output filters that converts relational data to other formats (e.g. CSV, XML, null-byte separated values) Transformations can be simple (like grep or cut with regular expressions) or complex and powerful – using GNU Guile expressions. SQL, AWK and Python transformations are planned for further releases.

Free Software Foundation!