Free diagram software for linux

Ghost Diagrams is a project that takes sets of tiles and tries to find patterns into which they may be formed. The patterns it finds when given randomly chosen tiles are often surprising.

It turns out that tiling patterns are a form of computation of equal power to Turing machines, lambda calculus, and cellular automata. For example, here is a tileset implementing "Rule 110", a cellular automaton known to be capable of universal computation.

Considerations similar to the halting problem and Godels theorem apply. There is no upper limit to their capacity to surprise us. Furthermore, tiles have an intuitive quality that other forms of computation lack. You can see how they fit together.

An organism is more than the sum of its organs. When the organs are fitted together, the organism becomes something more. This surprising something more we call "spirit" or "ghost". Ghost Diagrams finds the ghosts implicit in simple sets of tiles.

DiaDBDesigner is a standalone module for constructing databases with the help of the diagram creation program Dia.

In an easy to use environment, with DiaDBDesigner you can join multiple diagrams together to form one model of interconnected tables.

Dia is designed to be much like the commercial Windows program Visio. It can be used to draw many different kinds of diagrams.

Dia project currently has special objects to help draw entity relationship diagrams, UML diagrams, network diagrams, flowcharts, and simple circuits. It is also possible to add support for new shapes by writing simple XML files, using a subset of SVG to draw the shape.

It can load and save diagrams to a custom XML format (gzipped by default, to save space), can export diagrams to EPS or SVG formats and can print diagrams (including ones that span multiple pages).

Graidle (Graph aid), is a project that is proposed to create an application web for the realization of graph; it comes divided in four parts:
Graidle Fx proposed like didactic instrument for the visualization of diagrams of function to one variable;
Graidle SQL Friendly assists the creation of a graph starting from one query;
Graidle FrontEnd supplies to the user a graph personalized second every own requirement;
Graidle Class is the class that comes supplied for the development;
The realization of the site is apt to the demonstration of the operation of the same application, that it can be more complete visualizing sources releasable liberations in the appropriate Download section. We will have therefore one dedicated section to every part of the plan: In Function the customer will insert the number of functions to visualize, the interval and the quality of the curve and will come created a diagram to the flight; With the FronEnd they will be able to be inserted until to nine series give to you, choosing of the type, the name, the options like the colors, the title it, maximum and minimal, the lines grid etc... the customer will be able to save the just graphical one and to insert it in situated presentations or web; From SQL is a pure demonstrative and educational section, that it concurs to create given diagram of one query SQL; between the multiple usefullnesses there is that one of being able to visualize in realtime the graph of some give you present in database without or that one of being able to enclose to the tables of resultset a diagram that can clarify the visualization of gives to you; the handbook for who is available also wanted to externally use the class to this situated one;
The Graidle project is realized in PHP with the aid of GD2 library.
Enhancements:
- Introducing of Horizontal Histogram graph type;
- Introducing of Extended Legend for Horizontal Histogram;
- Introducing of new legend management system for a better visualization of all type of strings;
- Introducing of Selection standard CSS color on setValue function;
- New setMultiColor() to visualize different color on same value serie ;
- New setColors() to add one or more colors;
- New Bold Font type ;
- New setFontBD() method;
- Modified carry2file() for select patch and filename;

AutoDia is a modular application that parses source code, XML or data and produces an XML document in Dia format (or images via graphviz and vcg). AutoDias goal is to be a UML / DB Schema diagram autocreation package.
The diagrams its creates are standard UML diagrams showing dependancies, superclasses, packages, classes and inheritances, as well as the methods, etc of each class.
AutoDia supports any language that a Handler has been written for - see below for an up to date list..
Autodia now outputs the following formats :
- Graphviz (using dot to generate jpg, png, etc)
- dot
- vcg
- xvcg (using xvcg to output postscript, etc)
- dia (using a new custom directed graph algorithm to layout diagrams)
- HTML/XML/Anything (if you write your own template)
- Experimental SpringGraph (native perl directed graphs similar to graphviz) now included
- Experimental Umbrello XML/XMI (requires fixing)
Autodia now parses the following forms of input
- Perl
- Python
- PHP
- Java (some issues with version 1.4) no longer fully supported (it used to work, Java broke its APIs now it doesnt, fixes welcome)
- C++
- Torque (XML DB schema)
- DBI (perl database interface handles)
- SQL
- Umbrello (experimental)

aSVERD project is a Scalable Vector Graphics Entity Relationship Diagram generator. It is a tool that should be seen as part of a tool chain rather than a complete solution. What it does is read tables and relationships from a database and generate an SVG file containing the tables and links.
The motivation for creating this was than I have worked in many organisations that have databases with no ERDs and no tools for creating them. I finally got so fed up that I decided to do something about it and this is the result.
The way it is intended to work is that you point SVERD at your database and it creates an SVG file containing all tables and links between them. It DOES NOT attempt to create a fancy layout. it just puts the tables on the diagram in a grid. This can be viewed in a web browser (may need an SVG plug-in). You then use an SVG editor, such as GLIPSGraffiti to lay ou the tables. If you re-run SVERD on an exisitng output file it will not move the tables, therefore the diagram can be updated with out loosing your edits.
NOTE: the links between the tables are rendered using JavaScript, so that if you move the tables around in an editor, the links stay with them. The disadvantage of this is that the editor may not show the links while you are editing (this is the case with GLIPS).
If the table references are not defined in the database they can be supplied in a text file.
Usage
java -jar asverd.jar PropertiesFile
Or
java -jar asverd.jar -d driver -c connectionString -u user -p password [-o outputFile] [-q tableQuery] [-s schema] [-c catalog] [-r refs.txt]
e.g. sverd.TableLister -d com.mysql.jdbc.Driver -c jdbc:mysql://168.0.0.200:3306/DataBase1 -u fred -p secret
The properties file should contain
sverd.driver=databaseDriver
sverd.url=connectionString
sverd.user=username
sverd.password=password
sverd.outputFile=outputFile (optional - STDOUT used if not present)
sverd.tableQuery=query for table name - e.g. INV% (optional - all tables returned if not present)
sverd.schema=database schema (optional - leave out for DBs that do not use)
sverd.catalog=database catalog (optional - leave out for DBs that do not use)
sverd.references=refs.txt (optional - a file containing referecnes if these are not defined in the database. This file should be of the format TABLE [tablename] [foriegnKeyColName] REFERENCES [tablename] [primaryKeyColName] - I know flat text files are not trendy but this format is relatively easy to generate from either XML or SQL (via AWK, SED, PERL, etc)
Enhancements:
- This release fixes bugs with using the SVG in FireFox and adds JavaScript based zooming (click an entity to zoom). The jar contains source and class files

JGraphpad is a powerful, free diagram editor based on JGraph. It is currently available in English, French and German. With JGraphpad, you can create flow charts, maps, UML diagrams, and many other diagrams.
JGraphpad is provided as an example for the JGraph Swing component. Check out the JGraphpad applet and Web Start version.
JGraphpad is a versatile product that may be used to display and edit any type of diagram in the following fields:
- Knowledge Visualization
- Business Diagramming
- Software Engineering
- Monitoring and Configuration
- Transport Networks
- Workflow Systems
Main features:
- Supported Languages: English, French, German, Spanish, Japanese, Indonesian, Thai, Portuguese
- Flexible configuration, enable/disable features, toolbar buttons, add custom commands
- Programmable toolbar, GUI, and features (create your own toolbar buttons)
- Supports a wide range of platforms (Windows, Linux, Mac, Solaris)
- Copy and paste or drag and drop to and from Java and native applications
- Import/Export Text files, GXL, GIF, JPG, PNG, EPS, HTML Image maps, and GraphViz Dot
- Object library with flexible creation and management
- Shortest path and "spanning tree" selection
- 8 Different Automatic layouts
- Overview with Panning and Zoom
- Command History
- Printing and much more...
Enhancements:
- The release now compiles with JGraph 5.6.3, changing the use of graph references in various renderers.
- Some unused code was removed and various Javadocs were cleaned up.

ITVal is a decision-diagram based query engine for testing and verifying iptables firewalls.

Because firewalls can be very complicated, it is often difficult to know whether your firewall is correctly configured to protect against various attacks.

ITVal allows the system administrator to quickly and easily verify that the firewall setup satisfies a set of security properties expressed as queries.

Queries are specified in a simple English-like language that is very easy to use. Advanced firewall techniques, such as NAT and stateful filtering, are supported.