Free rapid application development environment software for linux

Rapid Application Development Library 2.8.3 is yet another excellent utility you should not miss. It is actually a C language library developed to abstract details of interprocess communications and common linux/unix system facilities so that application developers can concentrate on application solutions. It encourages developers (whether expert or novice) to use a proven paradigm of event-driven, asynchronous design. By abstracting interprocess messaging, events, timers, and any I/O device that can be represented as a file descriptor, radlib simplifies the implementation of multi-purpose processes, as well as multi-process applications.

Radlib greatly improves typical process performance through the use of shared memory buffers to avoid costly "malloc" and "free" library calls. These buffers are used for interprocess messages. radlib utilizes shared memory constructs to provide global message queue management and global "Queue Groups" for increased interprocess communications flexibility. All shared resources are semaphore protected to avoid issues with concurrent access.

In short, radlib is a sincere attempt to provide real-time OS capability on a non-real-time OS. It has been successfully deployed on linux, MacOSX and FreeBSD but there is no reason it would not build and run on any flavor of unix supporting System V IPC.

Specifically, radlib provides fast system buffers, a simple config file utility, events, doubly-linked lists, process logging through syslog, message queues, semaphores, shared memory utilities, timers, stacks, state machine utilities, a process framework, a process management utility to start/stop groups of processes, optional MySQL or PostgreSQL database API, a straightforward TCP/streams socket API, a UDP/datagram unicast/multicast/broadcast API, CRC and SHA utility APIs, and other assorted system utilities.

An example application template is provided in the distribution (see the "Example Application Template" link in the left column of this page). The template example serves two purposes: it demonstrates, through source code inspection, how a well constructed radlib process is implemented and it provides an example build environment with the capability for someone new to radlib to build and execute an example application "right out of the box".

Proprietary forms of radlib have been used in several mission-critical commercial applications with excellent results. It is light yet very powerful and efficient in real time. radlib is BSD-licensed (free to use in binary or source forms) and distributed as source to be built on the target platform. Build instructions are included in the distribution. See the file "COPYING" in the distribution for details concerning open source software and the BSD license.

Java Development Environment for Emacs (JDEE) is an Emacs-based integrated development environment (IDE) for developing Java applications and applets.
Features include multiple code browsers, a JPDA-based debugger, method and field completion, template-based and procedure-based code generation, Java source code interpreter, context-sensitive help, and more.
Enhancements:
- On XEmacs, Use efc-xemacs-query-options, i.e., a GUI dialog box instead of a text dialog box, only if use-dialog-box is nonnil.
- Fixes bug in ProjectClasses to avoid duplicate entries of imports.
- Updated JDEEs Ant interface to force use of pipes to interact with external Ant process.
- Fixed regression that caused jde-help-class-member to issue a Lisp error.
- Fixed regression in jde-wiz-update-class-list command.
- Fixed regression that caused JDEbug to issue a Lisp error when launching an application.
- Thanks to Martin Schwamberger.
- Revise the following templates to conform to CheckStyle requirements:
- jde-gen-deep-clone-template
- jde-gen-to-string-method-template
- jde-gen-bean-template
- Thanks to Martin Schwamberger.
- Added the following code generation templates:
- jde-gen-exception
- Generates an exception class in the current buffer.
- jde-gen-exception-buffer
- Generates a buffer containing an exception class.
- jde-gen-hashcode-method
- Generates a hashcode method at point.
- jde-gen-equals-method
- Generates an equals method at point.
- jde-gen-tostring-method
- Generates a toString method that uses Apaches
- ToStringBuilder class.
- Thanks to Ole Arndt.
- Enhanced jde-run-option-classpath to allow you to specify that the JDEE should omit the classpath argument when running the class or application in the current buffer, regardless of the setting of jde-global-classpath.
- Fixed regression that caused the JDEE to switch projects during debugging when stepping into code that does not belong to the project being debugged.
- Updated regular expressions used by the JDEEs interface to jdb to accommodate non-English punctuation styles for numeric expressions in debugger messages, e.g.,
- 1.200 for a line number where the English would write 1,200.
- Thanks to Morten B. Isaksen.
- In previous releases, building javadoc caused all future uses of compilation mode to try to
- display the javadoc. This release fixes the problem.
- Thanks to David Evers.
- Updated the submit-problem-report command to include an XEmacs users init.el file.

Python Integrated Development Application (Pida) is an IDE based around the idea of reusing existing tools, rather than attempting to write a set of development tools of its own.

Python Integrated Development Application uses Vim as the editor, either with its traditional user interface or with a user interface that resembles more common text editors.

PIDA is different from other IDEs. Rather than attempting to write a set of development tools of its own, PIDA uses tools that the developer has available. In this regards PIDA is a framework for assembling a bespoke IDE. PIDA allows you to choose the editor you wish to use (yes, Vim out of the box works).

Although still a young application, PIDA can already boast a huge number of features because of the power of some of the tools it integrates. For example features such as code completion and syntax highlighting are well implemented in PIDAs integrated editors far better than any editor built for a commercial IDE.

Additionally PIDA insists on stealing excellent ideas from applications it cannot embed. For example the Rapid Application Development in the style of Microsofts development products is achieved by the combination of Gazpacho (a user interface designer) and Tepache (a code sketcher), via the text editor.

PHP_Application project is a platform for development of event-driven applications in which two mechanisms of distribution of events for two levels of abstraction accordingly are realized. The first level are objects and their events, the second - the application and its events.
The mechanism of distribution of events of the applications supports distribution of the directed and broadcasting events, and also provides synchronous or asynchronous processing events.
The structure of the application represents hierarchy of objects with various levels of abstraction. Functionality of the application is completely defined by a set of the objects included in the application, and interaction between them, i.e. a stream of events. The used structure of the application allows to operate a stream of events extending downwards on hierarchy of objects.
PHP_Application includes, also, two interchangeable libraries: HTML Component Library (HCL) and XML Component Library (XCL) which use, accordingly, HTML Template Engine and XSLT Processor for generation of page. Thus, the application can be adjusted easily for use of this or that way of generation of page.
To additional features PHP_Application concern: multilanguage support; the ability to control access of object properties; multilevel access to the data of tabulared and tree-like type and many other things.
Enhancements:
- In the new version support of Aspect-Oriented programming is added;
- the rendering system is refactored;
- many new classes are added;
- new examples and the documentation are added;
- many bugs are corrected.

Flame Project is an Integrated Development Environment (IDE) for producing Flash and Animated SVG files, similar to Macromedia Captivate. It is licensed under the LGPL.

Imagine a free, easy to use GUI authoring environment that helps you create visually impressive and actually useful learning material. The short term goal for this project is to provide such an environment, and were well on the way to a first release for doing that.

Initially similar to Macromedia Captivate, but a big part is the support for Animated SVG. Flash has at least one serious design limitation (from my POV) making it nearly useless for comprehensive eLearning, and this appears to be addressed by the SVG spec.

The long term goal for this project is to provide both a complete authoring solution (like the Macromedia Flash IDE), and the components for server side communication, but thats a long way off. Lets finish the first bits first.

Coindesigner is a RAD (rapid application development) system to build 3D applications using Coin3D openInventor.
Coindesigner allows to write simple 3D scenarios just using drag&drop, so users require no programming acknoledges at all to use it.
Coindesigner is a system equivalent to glade or qt-designer, where we can choose components from the openInventor toolkit, add them somewhere in our scene and configure them in a very easy way... and all changes are applied to the scene on the fly!
Main features:
- Reads and write scenes in native openInventor file format
- Can import geometry from VRML, 3ds, DXF, OFF (from geomview), SMF, sphere trees .SPH and XYZ point clouds file formats.
- Can export geometry to file formats VRML2, SMF, OBJ, STL, OFF y XYZ.
- It allows to visualize volumetric data (such as medical CT) if SIM Voleon is available in your system.
- Makes some basic geometrical operations, as mesh reduction (with QSLIM) and convex hull computation.
- It includes cdsview, an minimalistic external viewer that allows you to view and distribute scenes without need of coindesigner.
- Provides helpers to define colors (with QColorDialog), file paths (with QFileDialog), menus for enumerated types and much more...
- Allows to use manips to configure Lights and Transform nodes. Just use the right mouse button to interchange between those nodes and their manip!
- GUI has been translated to English, Spanish and Portuguese
- Includes the complete coin reference and several tutorials directly brownsables from the application.
- Its as multiplatform as coin3d and Qt are. It works under Linux, Mac OS X, and Windows.
- Its open source released under GPL license.

ProjectCenter is GNUsteps integrated developement environment (IDE). It is based in part on NeXTs original Project Builder. It assists you in starting new projects and lets you manage your project files using a intuitive and well ordered graphical user interface.

Serg Stoyan is the current maintainer of ProjectCenter. Please contact him if you would like to submit a bug report or volunteer to improve ProjectCenter. The original author of ProjectCenter, Philippe C.D. Robert, no longer actively contributes to the application.

Over a decade ago, NeXT Computer Inc. revolutionized application development by making two great developer tools available for their operation system OPENSTEP: Project Builder and Interface Builder. These applications made application development much easier and faster and took NeXT ahead of the other computer manufacturers and operating system vendors.

Supporting the project types Application, Bundle, Library, Tool, and Aggregate, ProjectCenter automatically creates the project makefiles and aids you in the process of editing, project compilation, package building and debugging. In the future, built-in CVS support will be available, too.

ProjectCenter is a very useable application, but is still evolving. Support is there for project creation and inspection as well as basic Makefile generation. Using the Application project type, you can already create graphical applications using ProjectCenter and Gorm in conjunction.

GNUstep is a free, standard, object-oriented, cross-platform development environment meant to provide generalized visual interface design, a cohesive user interface, and look good as well. GNUstep is based on and completely compatible with the OpenStep specification developed by NeXT (now Apple Computer Inc.).
GNUstep is a whole load of things, but primarily a framework (libraries, tools, applications) for developing software. It is not a not a window manager. And the libraries are not used by WindowMaker at present, although WindowMaker shares a similar look.

At no stage will you ever run GNUstep - you will run applications and tools and will make use of its services. At some point you may well find packages distributed as GNUstep systems in the way that you get GNU/Linux systems packaged today. Look at Simply GNUstep, the GNUstep Live CD, and Project Backbone for examples.

The ProjectCenter will hopefully consist of the following capabilities somewhen in the midterm future:

* Project management
This includes versioning control, automatic makefile generation, file management etc.

* Source code editing facilities
A builtin editor will be available in a future release. This has not main priority, though.

* Debugging fascilities
A builtin debugger will be added to ProjectCenter as soon as possible!

* Documentation automation help
Automatic documentation generation using autogsdoc or another tool will be introduced later.

* UML-based case tool