Free editor software for linux

TopAZ, short from Topology Analysis and Visualization, is a tool developed in Java with a visual editor which helps visualize changes caused to the attributes of the graph when it is manipulated. It is mainly used for viewing, creating, editing & analyzing graphs.

GtkSourceView project is a text widget that extends the standard gtk+ 2.x text widget GtkTextView.

It improves GtkTextView by implementing syntax highlighting and other features typical of a source code editor.

Ara is an automatic editor of RSS feed. Only the links towards the Web pages must be given to him. The project is able to retrieve the title and the description of the pages and to produce a syndication file in the RSS format.

It enables you to select the pages to be syndicated instead of publishing the last articles systematically as the generators included in content managers do it.
The Ara term means "Atom and RSS API", it is also the name of a species of parrots from South America.

Using Ara

The program is a set of PHP scripts which have to be stored on a Web site. One creates a feed from the browser by entering the URL of the interface, ara.php.
It is easier to use the program with two browsers, one to display the pages to include and to copy the URLs from the URL input field, the other to edit the RSS file. Thus by just a cut and paste action one transfers the URL from the field to the interface and one clicks on "Add" to add it to the list.

The EDIT button on the left of the link makes it possible to modify the title and description if one wants.

To generate the feed, one enters the nam.

Warning
Ara is not a simple editor, when a page is added, it is reads for extracting useful information and for this purpose Ara makes use of Ajax (with the Anaa framework ), but Ajax can read files only from the site where it is installed. Actually the goal is to build the feed of the site, just avoid to give URL to other sites.

How it works

It is an Ajax script with a backend in PHP 5. In the current version only the pages of the website where it is installed can be added to the feed.

It is necessary to be authenticated to use it, to this goal the install.php program allows to register a login and a password. This file must absolutely be be erased. Once registered, the user remains registered for the whole session, even if he reads other pages meanwhile.

To generate the contents automatically, the program loads the pages given in the list and reads in the head section the contents of the title and description tags. If they are missing, the first H1 tag in the body of the page will be used for the title instead.

The same if description misses, the text of the synopsis will be taken from the page instead.

GtkHTML is a HTML rendering/editing library.

GtkHTML is not designed to be the ultimate HTML browser/editor: instead, it is designed to be easily embedded into applications that require lightweight HTML functionality

PlEd is intendet to help to automate tasks of Textmanipulating, which are to special, to be found in ordinary ediors.
The project is mainly an interface to be easily extended with own plugins. Some plugins are shipped for demonstration and stimulus.
To be true, I have to admit, that I would prefer to see my prefered editors to provide such functionality, instead of using two editors.
Main features:
- PlEd is written in Java.
- is copyright under the GPL .
- is meant for hackers, coders, professionals.
- comes with commented source.
Enhancements:
- A configurable interface was added to change the meaning of buttons for inverse meanings.
- Performance and memory usage were improved by using StringBuffer instead of Strings.
- The license was changed to GPL 3.0.
- Minor improvements were made to the IndentationPlugin and Tab2HtmlPlugin plugins.

SPAW Editor is a web based in-browser WYSIWYG editor control. SPAW Editor enables web site developers to replace a standard textarea html control with full-featured, fully customizable, multilingual, skinable web based WYSIWYG editor.
Version 2 adds tabbed multi-document interface, floating/shared toolbars, modular architecture and many other exciting features.
Main features:
Tabbed Multi-document Interface
- Version 2 introduces new industry unique tabbed multi-document interface feature. Now you can edit virtually unlimited number of HTML snippets in a single WYSIWYG instance. This can save a lot of screen space, unnecessary scrolling and loading time compared to other solutions where you have to load as many WYSIWYG instances as HTML snippets you want to edit.
Floating/Shared Toolbars
- Multiple instances of SPAW Editor v.2 can be controlled by a single toolbar. This toolbar can either be attached to one of the instances or float around the screen. This way you can save loading time and achieve a better level of integration of the editing area into complex designs (no toolbar overhead)
Resizeable Editing Area
- Users can resize editing area of the editor both vertically and horizontally. Resizing directions could be controlled by the developers as well as users or disabled altogether. Content editors are able to see as much (or as little) content as they wish.
Modular Architecture
- One of the main problems in SPAW v.1 was that it was very difficult to extend the core functionality. SPAW Editor v.2 was designed with extendability in mind. Rich API is available for developers allowing to extend the functionality to whatever your needs are. Publicly available plugins developed by Solmetra as well as 3rd parties will be posted to our plugin page.
Enhancements:
- FEATURE ADDED: support for Safari 3 browser on OS X and Windows
- BUGFIX: absolute URLs were not stripped in XHTML module
- BUGFIX: XHTML rendering: only the first instance of & in href and src attributes was converted to &