Free development of applications software for linux

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.

Lucidium Application Platform project consists of a platform for the rapid and agile delivery of custom data/process application
ucidium is an application development environment in which fully featured, custom, Web-based data/process solutions can be delivered using little or no code. After describing your data model to the platform, it will automatically create powerful search, list, review, and update screens.
Skins can be customized using XSL, and complex actions can be added using JavaScript or Java. Any relational data model and process can be described and delivered.
Available ERP type modules include HR, Accounts, Logistics, Project Management, Case Log, and Document Management.
Main features:
- A platform upon which data driven applications can be configured and deployed.
- Cuts development cost, risk, complexity and effort.
- Is a proven open-source Java solution.

Enveria IDE for Rapid Application Development is an intuitive platform for programming robust GUI (graphical user interface) software.

We have launched the Enveria RAD IDE as an open source application (https://sourceforge.net/projects/enveria). Previously, the Enveria IDE was utilized as an internal development tool at Kaizen Denki Inc. -- a Toronto-based software and web development house.

Enveria is free to use for non-commercial purposes under the GPL. Users who wish to use Envria in a commercial capacity should visit the Kaizen Denki home page at http://www.kaizendenki.com.

Major Features:

* An interface that maintains an look and feel that is intuitive for those familiar with IDE software, while user friendly enough for those who are not.

* Backed up by the power of the ubiquitous C programming language. We have chosen C because it is fast, stable, powerful, portable and has a long history of use in computing. An additional bonus for us was that the API for GTK+ (the widget set we use) uses C natively.

* Our use of GTK+ allows Enveria to tap into a well-supported widget set that is available for all major desktop operating systems. On its own, GTK+ is easy to use but with Enveria it is even easier. While Enveria RAD IDE can be an interface builder for GTK+/C programs (like Glade), its power is its capabilities as a complete development tool.

* Enveria can produce code without compiling for those who wish to enhance their applications manually prior to building. Enveria programs are optimized for Make/GCC, which is a widely used combination for C development on many platforms.

Programming languages, libraries, databases, and frameworks used to develop Enveria include:

* C
* MySQL
* SQLite
* GTK+ 2

Currently Linux is the main supported platform for Enveria RAD IDE.

At the same time, we are in the process of evaluating other target operating systems including: Mac OS X, Minix 3, BSD and others.

Trac is an advanced tool for tracking software development projects. It provides a simple wiki, issue tracking system and tight integration with the Subversion revision control system. Trac/Subversion Development JumpBox bundles Trac 0.10.4 and Subversion 1.3.1.

WHY USE A JUMPBOX

Its Simple

Open Source applications are great. The applications are powerful, inexpensive and get the job done. But installing and configuring those applications can be a pain. A JumpBox delivers Open Source applications in a way that makes them simple to try, run and operate.

Its Quick

Actually downloading a JumpBox will take the most time. Once thats done, youre just a few minutes from having a working application that can serve multiple users.

Its Portable

A JumpBox collects the application, application dependancies and all application data into a single bundle that can easily be moved from one computer to another. This allows you to start running the application on your desktop and then as usage grows move it to a server without needing to reinstall or reconfigure. Plus with support for Mac OS X, Windows and Linux you can even move the application between platforms with little effort.

Its Safe

Manually installing Open Source applications not only takes a lot of time and effort, but when youre done its still left to you to figure out how to protect the data the application manages. With a JumpBox its easy to add automatic backups of the entire state of the application.

Its Virtual

A JumpBox application is a virtual appliance that bundles the open source application and all its runtime dependancies into a single package that runs on top of virtualization software from VMWare, Parallels or Xen. This means all JumpBox applications automatically gain the benefits of traditional server virtualization and can be dropped into existing virtualization infrastructure when available.

Its Comfortable

JumpBox provides a consistent runtime environment for all applications that we bundle. The applications may differ considerably, but their installation and operation will be familiar no matter which JumpBox you choose.

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.

Open Tranquera is a repository of reusable components for J2EE application development.

There are UI extensions, Services, and a Persistence layer, integrated with existing open source frameworks.

Netautor Professional webapplication is an Application Server with integrated Development Environment.
The provided framework assists the developer with the programming of databased Web Applications.
The excellence of Netautor Professional is it`s wide functional range and the for this reason high flexibility. All demands on the Intra- or Intranet are realizable.
Netautor Professional is based on the Scripting Language PHP and can be used on numerous common platforms. It is licensed under the GPL.
Enhancements:
- Check user password via LDAP server
- "Pretty printing" on the source code continues ...
- Some minor fixes
- Define a target charset in functions like NPF_GETVAL.