Free independent software for linux

Platform Independent Petri Net Editor project (PIPE) creates and analyses Petri Nets quickly, efficiently, and effectively.

A key design feature is the modular approach adopted for analysis, enabling new modules to be written easily and powerfully, using built-in data layer methods for standard calculations.

Six analysis modules are provided, including Invariant Analysis, State-Space Analysis (deadlock, etc.), and Simulation Analysis and Classification.

PIPE adheres to the XML Petri net standard (PNML). The file format for saving and loading Petri Nets is extensible through the use of XSLT, the default being PNML.

Database Independent Abstraction Layer for C (libdbi) implements a database-independent abstraction layer in C, similar to the DBI/DBD layer in Perl.
Writing one generic set of code, programmers can leverage the power of multiple databases and multiple simultaneous database connections by using this framework.
Main features:
Database-level abstraction:
Your programs dont need to deal with the arbitrary interfaces and oddities of each database library. libdbi handles all the details for you, you just tell it what you want the database to do.
Modularity:
Since database code written with libdbi is not tied to one specific database server, you can effortlessly switch databases or give your users the option to specify their own database settings.
Clean interface:
With ample documentation describing libdbi and its well thought out object-oriented design, programming with libdbi should be less painful than programming with native database libraries. And you only need to learn it once instead of learning each database librarys syntax.
Accommodates coder apathy:
libdbi is written to do The Right Thing(tm), not just some quick hack that does the job in a half-assed fashion. This saves tons of your $100/hour time from debugging, so that you can mess around having fun during the hours that clients are paying you to debug. It also strives to reduce the worldwide crisis of carpal tunnel syndrome, so it uses constructs such as this one to pack multiple function calls into one line, saving you the bother of typing more than you have to:
dbi_result_get_fields(result, "id.%i firstname.%s lastname.%s fractional_value.%f", &id, &firstname, &lastname, &floatval);
Driver interface:
The dynamic linking used by libdbi allows for driver authors to license their drivers however they please - they are not restricted to the GPL or LGPL. Drivers are easy to write, and require no special installation.
Error handling:
Instead of checking every single database call for errors, libdbi gives programmers the option of registering an error handler callback, similar to a signal handler. Because we know youll "forget" to check for errors otherwise :)
Convenience:
Spend your time writing clever code, not reinventing the wheel with your own single-use, #define-abusing, less featureful database interface.
libdbi implements a database-independent abstraction layer in C, similar to the DBI/DBD layer in Perl. Writing one generic set of code, programmers can leverage the power of multiple databases and multiple simultaneous database connections by using this framework.
The libdbi-drivers project maintains drivers for libdbi. Drivers are distributed seperately from the library itself.
There are currently drivers for MySQL, PostgreSQL, SQLite, and mSQL. More are on the way.
Enhancements:
- Support for a timezone suffix in time and date types was added.
- Error handling and error reporting were vastly improved.
- Some memory leaks were fixed.

OpenGuides::Test are methods to help test OpenGuides applications.

Provides methods to help when writing tests for OpenGuides. Distributed and installed as part of the OpenGuides project, not intended for independent installation. This documentation is probably only useful to OpenGuides developers.

SYNOPSIS

use OpenGuides;
use OpenGuides::Test;

my $config = OpenGuides::Test->make_basic_config;
$config->default_language( "nl" );

my $guide = OpenGuides->new( config => $config );

OpenGuides::Test->write_data(
guide => $guide,
node => "Crabtree Tavern",
os_x => 523465,
os_y => 177490,
categories => "Pubs",
);

OpenGuides::Utils is a general utility methods for OpenGuides scripts.

Provides general utility methods for OpenGuides scripts. Distributed and installed as part of the OpenGuides project, not intended for independent installation. This documentation is probably only useful to OpenGuides developers.

SYNOPSIS

use OpenGuide::Config;
use OpenGuides::Utils;

my $config = OpenGuides::Config->new( file => "wiki.conf" );
my $wiki = OpenGuides::Utils->make_wiki_object( config => $config );

OpenHuman is a Web-based, database and operating system independent, self-expression system. It is an exact copy of the idea experimented with on openhuman.org.
OpenHuman project has been released to let social groups from anywhere around the world build their own openhuman pages and experiment with this idea locally.
Why you should be an OpenHuman? Because:
- openness is always good
- helps us to understand that we are not alone
- makes you stronger, dont be shy
- widens your vision, enlightens you
- can be a place to make references about you (like: Emre has 4 names)
- can help scientific researches (database dumps will be freely available)
Enhancements:
- Wikipedia Interoperability.
- An internal markup language.
- Updated Profiles on the homepage.
- Usability improvements.
- A minor bugfix in dashboard.php.

OpenClinic project is a easy to use, open source, medical records system.
It has been mainly developed for private clinics, surgeries, and private doctors.
It is platform independent and has a multi-language architecture.
Main features:
- Environment: Web Environment
- Intended Audience: Education, Healthcare industry
- License: GNU General Public License (GPL)
- Natural Language: English, Spanish, Bulgarian
- Operating System: OS Independent
- Programming Language: PHP
- Topic: Dynamic Content

GNU 3DKit is a platform independent rendering architecture based on OpenGL, written in ObjC.

GNU 3DKit is part of the GNUstep environment, which provides an object-oriented application development framework and tool set.