Free software that allows software for linux

Ivy is a simple protocol and a set of open-source libraries and programs that allows applications to broadcast information through text messages, with a subscription mechanism based on regular expressions.
Ivy libraries are available in C, C++, Java and Perl, on Windows and Unix boxes and on Macs. Several Ivy utilities and hardware drivers are available too.
Ivy is currently used in research projects in the air traffic control and human-computer interaction research communities as well as in commercial products. It is also taught to CS students.
Ivy is a CENA product.
Main features:
- Ivy is not based on a centralised server. Actually, Ivy is mostly a communication convention, implemented through a collection of libraries for various languages and platforms. The current version of the Ivy protocol is version 3, which has been stable for the last 3 years.
- Language bindings are available in C (Unix and Windows), C++ (Mac, Unix, Windows), Java and Perl. There have been successful uses through the C library
- Messages are formatted in text, and subscriptions are based on regular expressions. Plans to move to an XML-based subscription language are on their way.
- From the programmers point of view, Ivy is an information broadcasting channel. The main functions are:
- connecting to a bus. Example: IvyInit (b, "192.126:2011")
- sending a message. Example: IvySend (b, "HELLO %s", world)
- binding a message pattern to a callback function. Example: IvyBind (b, "HELLO (.*)", cb)
- the main loop. Example : IvyLoop ()
- Subscriptions are managed on the emitters side, which limits the actual network traffic.
- Direct point-to-point messages are also available.
- Ivy was designed by a research group in Human-Computer Interaction, with the goals of connecting applications written on different toolkits/languages/platforms (such as an OpenGL application on a SGI connected to a PerlTk application on a Linux box), while keeping it simple: no server to be lauched and supervised, a simplistic API, and a communication model compatible with classical event-based GUI progamming. We think we have somewhat reached our goal...
Enhancements:
- This release mostly contains bugfixes and code cleanup.

Contractor Software allows contractors to manage their projects and interact with customers online. A contractor can post each task of a project. Each task has a start date and estimated completion date.

The client can then always know where the project is and leave comments for the contractor on each task. The contractor can also reply to the client with a follow up comment. This enhances communication and also leaves a record for reference later.

Membership project allows you to keep accurate and up to date membership records online.
Features membership import, to bring your membership in from another software package. Also features membership export feature for creating mailings.
Search your membership and store information and pictues about each member.
Enhancements:
- This release fixes a few minor bugs found in the authentication module.

FreeTranslate allows you to translate individual words on a web page.

Freetranslate.xpi is a simple extension that allows you to translate individual words on a web page between 10 different languages via www.freetranslate.org.

Locales supported: French & Italian.

SourceEditor allows you to view and Edit source of HTML element.

View and Edit source of HTML element.

Use the button on status bar to activate/desactivate and the double click or the context menu to edit source of the selected element

sudokumat project allows you to easily create and solve sudokus of different levels of difficulty.

It is possible to create your own "pdf-sudoku-book" with as many sudokus as you want.

Sudokumat solves every sudoku within milliseconds.

TextSort application allows you to sort the lines of a text alphabetically.
This program is released under the GPL license.
Main features:
- Case sensitive or insensitive
- Trim lines, remove empty lines
- Remove duplicates

SiNotes project is a simple desktop notes manager that allows you to create electronic desktop notes, search them in very convenient way, and display them.