Free gpled software for linux

Ngspice is both the name of a development project and the name of the developed software (hmm, strange isntit ?).
The ngspice project aims to build an open source GPLed mixed-mode/mixed-level circuit simulator. This means that the circuit simulator has to be written nearly from scratch, which is a complex and time consuming task.
The project first step (and not a small one) has been to get a freely available (but not GPLed) circuit simulator, spice 3f5 and studied its code in the hope that we could use it as a base for the real ngspice (the GPLed one).
While it is not possible, at the time this page is written, to base our code on spice 3f5, because of a conflict between its license and the GPL, we are trying to correct its bugs and make some improvements, providing our results to the community.
This process goes in parallel with the task of writing the new simulator. We hope that Berkeleys people will change spices license releasing it under GPL or under the new version of the BSD which has the incompatibility removed. This will surely speed up the coming of the real ngspice.
Main features:
- Better convergence: new algorithms for Operating Point analysis. Modified Fixed Point homotopy is a good candidate.
- Dynamically Loadable Devices: In the original spice code all devices models have to be statically linked in the simulator executable. This new approach will reduce the memory needed by the simulator code and improve its modularity. A device interface that allows dynamic loading has not yet defined. Since ng-spice-rework-10 all devices are shared libraries, but they must still be linked at compile time. The next step is to make devices behave as "plugins".
- Implementation of new analyses: ngspice should become a powerful synthesis tool, so 2-ports networks analyses are a must and optimization features must be taken into account.
- Mixed Mode / Mixed Level simulation: include into ng-spice the capabilities to simulate analog and digital systems and include numerical devices into its netlists. CIDER device simulator (always from Berkeleys CAD group) is the candidate for the Mixed Level part.
- Input/output enhancements: most spice users have requested improvements in the I/O part of spice, mostly compatibility issues with existing commercial simulators.
Enhancements:
- Bug fixing: most of the bugs that affected rework-15 have been fixed, thus ngspice is more stable, especially the xspice extension, the subcircuit (X devices) handling and the numparam library.
- New features: netlist syntax has been expandend allowing for end-of-line comments. A ".global" card has beed added to define global nodes, i.e. nodes that are not expanded in subcircuits. It is possible to define TC for resistors on the instance line. The editline library can be used instead of readline (no more GPL license violation).
- Porting: ngspice now works (with xspice extension) on Windows using MINGW/MSYS.

GANYMEDE is a portable and customizable network directory management system, released under the GNU General Public License. It is free software. Ganymede is written in Java, and the Ganymede clients can be run on any system with JDK 1.1.7 or better. The Ganymede server is designed to run on a UNIX-type system, but can be run on almost any Java-supporting operating systems with the proper support scripts.

Ganymede is designed to manage network directory services such as NIS, DNS, Netinfo, and LDAP. The Ganymede server contains an object database of your network directory data, which users and admins can browse and edit using a polished GUI client. Whenever a change is committed to the database, the Ganymede server dumps out a bunch of data files and runs backend scripts to update your network directory services. All changes are logged, and Ganymede can send email to your users and administrators notifying them of account activity.

Ganymede is both multithreaded and multi-user. Many users and admins can be browsing and making changes to the Ganymede database simultaneously. The Ganymede server supports transactions, and transparently handles locking and concurrency issues to guarantee referential data integrity during concurrent editing. Ganymede supports fine-grained delegation, so that you can allow arbitrary subdivision of authority over your network directory services. If you want to have a single NIS domain for your organization but you want certain administrators to be able to edit only certain user accounts, Ganymede makes it easy.

Finally, Ganymede is highly customizable. You can customize the servers schema definitions to handle whatever sort of directory data you want to manage, and data can be imported from any source you like using Ganymedes flexible XML interface. You can create custom Java classes to generate any sort of data files, and your own back-end builder scripts in your favorite scripting language to handle the distribution of directory updates. You can create administration tasks to be run automatically by the Ganymede scheduler, and you can create plug-in classes to oversee almost every aspect of the editing process.

At ARL:UT, we use Ganymede to manage NIS, DNS, a Windows NT domain controller, Samba, Sendmail, tacacs, and LDAP. If you have a lot of network directory services that youd like to unify without having to rearchitect your network systems around LDAP or Active Directory, Ganymede may be the tool for you.

FreeSynd is a cross-platform, GPLed reimplementation of the classic Bullfrog game, Syndicate.
As the worlds multinational corporations grew, their profits began to rival those of small countries. Soon they owned small countries and corporate influence was felt at the highest level of world government. Smaller corporations were swallowed up like plankton in the wake of three behemoth mega-corporations, one U.S.-based, one Europe-based and one based in the Far East. These became the only effective world government, unelected, undemocratic, but controlling the lives of the people through commerce.
Then the European corporation perfected the CHIP. Inserted in the neck, the CHIP stimulated the brain stem to alter your every perception of the outside world. Better than any drug, the CHIP gave hope to millions by numbing their senses to the misery and squalor around them. One CHIP would convince users that the sun shone and the birds sang even as they walked through the constant acid rain drizzle. Another that they were glamorous or handsome - theyd look in the mirror and see a different face - while the rest of the world would see them as they really were.
The CHIP was a technological revolution and sold countless units with the slogan "Why change your world when you can change your mind". It also left the user open to auto-suggestion and gave the corporations the perfect tool for manipulating the populace.
Like any new and potent drug, control of the CHIP meant control of the people. Soon the corporations were at war among themselves, desperate to monopolize CHIP manufacture. But the corporations thirst for power left them open to infiltration.
With money earned through pirating CHIP technology, crime Syndicates bribed and murdered their way into corporation boardrooms. It wasnt long before the Syndicates became the controlling force all over the globe, with a finger in the pie of every transaction, criminal or otherwise, worldwide.
And in the crime Syndicates of tomorrow those in control dont need uzis for back up. Teams of custom-built cyborg agents hunt down rivals and traitors, and spread the influence of the Syndicates across the globe.
Enhancements:
This release boasts the following:
- The first level is "playable".
- Most of the menus are complete and functional.
- Sound and music are operational.
Known issues with this release:
- Agent AI is different from the original game.
- No trees the map.
- The minimap is not complete.
- Tax collection and other functionality of the world map are not done.

OpenSS7 is an opensource development project to provide robust and GPLed SS7 stack for Linux and other UN*X operation systems.
Perhaps we should have called it LinuxSS7, or SS7-For-The-Common-Man, or SS7-For-The-Rest-Of-Us, but were kinda attached to the name OpenSS7 as this is an opensource project.
Project Purpose
The purpose of the OpenSS7 project is to attempt to address the following impediments to the widespread use of SS7 both inside and outside the carrier community: Expense, Complexity, Collaboration, Certification, Core Competency and Expertise.
Project Background
Lists and describes some of the significant turning points in the OpenSS7 Project. These are just the highlights.
Project Mandate
Mandate of the OpenSS7 Project: build an SS7 stack.
Project Scope
Lists and describes what components are considered within the scope of the project and which are not.
Project Objectives
Lists and describes the specific objectives of the OpensSS7 Project.
Enhancements:
- The SCTP, STREAMS, and ISDN components were updated.

Rivendell aims to be a complete radio broadcast automation solution, with the facilities for the management, scheduling, acquisition and playout of audio content.
As a robust, functionally complete digital audio system for broadcast radio applications, Rivendell uses industry standard components like the GNU/Linux Operating System, the AudioScience HPI Driver Architecture and the MySQL Database Engine.
Main features:
- A complete GPLed radio automation system.
- Designed for efficient on-air use, with large, touchscreen-friendly controls.
- Up to three full automation logs may be operated from a single computer.
- Extensive support for live assist environments, with multiple SoundPanel arrays available at the touch of a finger.
- All configuration is done by means of point and click interfaces -- *no* arcane configuration files to edit!
- Support for both PCM16 and MPEG Layer 2 audio formats.
- Full support for both analog and AES3 digital audio interfaces, using high-quality audio adapters manufactured by AudioScience Inc. and the JACK Audio Connection Kit.
- Designed by radio broadcasters, for radio broadcasters.
- Completely free and open -- no dongles, unlock codes, software keys or other arbitrary limitations.
Components:
- RDAdmin ~ comprehensive system configuration and management tool
- RDLogEdit ~ complete program log editing tool
- RDLibrary ~ audio acquisition and management tool, for maintaining a library of audio content
- RDAirPlay ~ on-air audio playout application
- RDCatch ~ automatic audio recorder and event scheduler specifically optimized for simultaneous capture of multiple long-form audio programs
- RDLogManager ~ tool for integration with a wide array of third-party traffic and music scheduling systems

KGuitar is basically a guitar tabulature editor for K Desktop Environment. Its much more than just a tab editor.
Main features:
- Free GPLed program;
- K Desktop Environment GUI;
- Powerful and convenient tabulature editing, including many effects and classical note score editing for classic instrument players;
- Full and very customizable MIDI to tabulature import and export;
- Support of extra data formats, such as ASCII tabulatures or popular programs format, such as Guitar Pros or TablEdit;
- Chord fingering construction tools - chord finder & chord analyzer;
- Highly customizable to suit a lot of possible instruments (not only 6-stringed guitars, and even not only guitars), including drum tracks, lyrics and other MIDI events.
Enhancements:
- Initial support of power tab (BETA!!!!)
- Add a wizard for the tse3 and timidity configuration
- and correct other bugs

Unlimited Simulator project is a general purpose simulator.
Unlimited Simulator is not a game. Its a basis to create whatever simulations you want, from games to scientific simulations.
You only have to worry about physics, controls and how the world looks like. It can be at the same time a car simulator, a spaceships war game, or a scientific simulation.
While you can do these things on their own, Unlimited Simulator provides the ability to do all three at once. It allows interaction of completely different kinds of clients, thus achieving unprecedent realism and complexity.
Main features:
- multiplayer: many players by internet or two in your computer;
- create your own vehicles, tracks, terrains, sounds, objects;
- vehicles may have their own physical simulation functions, and interact with the game, creating new objects, destroying others. They can fly or float or move underwater; they can be animals, or surrealistic creations. You create.
- track can contain structures as loops, bridges, banked curves, and anything you can do with polygons;
- creating a track can be done DRAWING on the terrain (not implemented yet);
- objects can be animated and intelligent!
- everything is modular: this means almost all the stuff is plugable! No need to recompile the code;
- last, but not least: GPLed!
Enhancements:
- big debugging in ulengine/primitives.c. Several allocation problems solved.
- review of network code: structs separated in a new header, shared/net.h, and other improvements in code itself.
- review of client plugin format (what functions, names, etc).
- wrappers for the not-so-standard standard C variable types in config.h.
- cosmetic changes in some places, specially ulengine.h.
- BIG debugging in ulengine/project.c and ulengine/graphic.c. Only a billion or so bugs left.
- improved ulengine/demo.c; tests now include graphic functions.
- fixed two small bugs in drawHLine due to rounding.
- added a new projection system. Not tested yet.
- graphics test phase started: drawPixel, drawHLine, drawLine, drawFlatTri and drawShadedTri are working.
- modified POLY_UL structure: SCREENP_UL *projected field was deleted. This field is really unecessary, and deleting it saves 2*sizeof(int) bytes for each vertex. Projections are not individually saved anymore (why should they be after all?). See ulengine/project.c:projectP() to see how projected points are handled.
- added ulengine/image.c, to handle image operations.
- added ulengine/effects.c.
- textures support implemented.
- several small optimizations in ulengine/graphic.c.
- work in the server communications system.

So what is Open Quartz? Basically, it is a replacement for the Quake 1 game data under the terms of the GNU General Public License. In addition, GPLed tools are developed to support developers of content for the Quake engine.

On 31 May 1996, id Software released the game Quake, which became a huge success. In 1999, the sourcecode for Quake was released under the terms of the GNU General Public License.

Thus peolple could improve the engine and use the engine to create their own games. Soon after the source release, the QuakeForge project was startet to create a cross-platform engine that would appeal to many people.

But having only a GPLed engine but non-free data files was unsatisfiyng so the QuakeForge team also startet Open Quartz.

Though being abandoned for many years, the project is going again thanks to new and devoted developers. But your help is still appreciated, there is a lot to do.

Why is having a free engine and non-free data so unsatisfying? Quake can still be easily aquired from the id Store and a Shareware Version is also available.

Yeah, thats true. Quake is a great game and we encourage everyone to buy it. Combined with up-to-date engines like Darkplaces, QuakeForge and Tenebrae its still a great experience. The reasons why OpenQuartz is developed lie not with the availability of Quake nor is Quake a bad game.

Its just that both a free engine and a free data set result in a lot more options and possibilities for developers and the end-user. Its for example not possible to ship Quake with any free Linux distribution like Debian.

But you can do that with OpenQuartz. Also, when you want to create an own game using one of the advanced Quake engines, you have to recreate everything from scratch. With OpenQuartz, you have a lot of free content already availabe which means a lot less work. Also, creating standalone games from existing Quake Mods is now easily possible thanks to Open Quartz.