Free producing software for linux

Duplicity backs directories by producing encrypted tar-format volumes and uploading them to a remote or local file server.
Because duplicity uses librsync, the incremental archives are space efficient and only record the parts of files that have changed since the last backup. Because duplicity uses GnuPG to encrypt and/or sign these archives, they will be safe from spying and/or modification by the server.
The duplicity package also includes the rdiffdir utility. Rdiffdir is an extension of librsyncs rdiff to directories---it can be used to produce signatures and deltas of directories as well as regular files. These signatures and deltas are in GNU tar format.
Main features:
Easy to use: Although duplicity is a command-line utility, the semantics are relative simply. To take a basic example, this command:
- duplicity /usr scp://host.net/target_dir
- backs up the /usr directory to the remost host host.net via scp.
Encrypted and signed archives: The archives that duplicity produces can be encrypted and signed using GnuPG, the standard for free software cryptology. The remote location will not be able to infer much about the backups other than their size and when they are uploaded. Also, if the archives are modified on the remote side, this will be detected when restoring.
Bandwidth and space efficient: Duplicity uses the rsync algorithm so only the changed parts of files are sent to the archive when doing an incremental backup. For instance, if a long log file increases by just a few lines of text, a small diff will be sent to and saved in the archive. Other backup programs may save a complete copy of the file.
Standard file format: Athough archive data will be encrypted, inside it is in standard GNU-tar format archives. A full backup contains normal tarballs, and incremental backups are tar archives of new files and the deltas from previous backups. The deltas are in the format produced by librsyncs command-line utility rdiff.
- Although you should never have to look at a duplicity archive manually, if the need should arise they can be produced and processed using GnuPG, rdiff, and tar.
Choice of remote protocol: Duplicity does not make many demands on its archive server. As long as files can be saved to, read from, listed, and deleted from a location, that location can be used as a duplicity backend. Besides increasing choice for the user, it can make a server more secure, as clients only require minimal access.
- Currently local file storage, scp/ssh, ftp, rsync, and Amazon S3 are supported, and others shouldnt be difficult to add.

Passepartout is an Open Source* Desktop Publishing* application for the X Window System*. Passepartouts goal is to create a system capable of producing pre-press material of professional quality, but also to be a useful tool for any enthusiast with access to a printer.
The main focus is on making it easy for the user to create publications with a flexible layout, typical examples being magazines, brochures and leaflets.
Passepartout is still in the early stages of development, but it is already quite usable.
Main features:
- A user-friendly GTK+-based interface
- Layout templates
- An XML-based typesetting engine called xml2ps
- User-defined text formatting with XSLT stylesheets
- Unicode support
- Importing EPS (Encapsulated PostScript) files
- Importing images in JPEG, TIFF, PNG (no transparency), XPM, PNM, RAS, BMP and GIF format
- Text running around image (or text) frames
- Printing to PDF, PostScript and EPS
- Support for Type1 and TrueType fonts

The mp distribution now consists of two programs, mp and mptool.

The mp program will pretty print various files for you. It can be used in conjunction with a mail reading utility for producing a pretty print of your mail items. It can be used with a news reading tool to pretty print news articles.

Digests can also be printed, and this version can pretty print ordinary ASCII files as well. Support for personal organiser printing was added into the last released version. There are numerous configuration options to allow you to adjust the way mp generates its output.

The mptool program is a graphical frontend to mp. It makes it easy to configure the printout of your documents without having to remember lots of complicated command line arguments. It also supports drag and drop of text from other Gtk+ applications.

ploticus is a free, GPL, non-interactive software package for producing plots, charts, and graphics from data. ploticus was developed in a Unix/C environment and runs on various Unix, Linux, and win32 systems.

ploticus is good for automated or just-in-time graph generation, handles date and time data nicely, and has basic statistical capabilities. It allows significant user control over colors, styles, options and details.

From the command line you can run ploticus using the pl command. The pl command can also be invoked via CGI. C developers can use libploticus. Other interfaces exist for packages such as Python.

PyScript project is a python module for producing high quality postscript graphics. Rather than use a GUI to draw a picture, the picture is programmed using python and the PyScript objects.
Main features:
- All scripting is done in python, which is a high level, easy to learn, well-developed scripting language.
- All the objects can be translated, scaled, rotated, ... in fact any affine transformation.
- Plain text is automatically kerned.
- You can place arbitrary LaTeX expressions on your figures.
- You can create your own figure objects, and develop a library of figure primitives.
- Output is publication quality.

Sparklines are intense, simple, wordlike graphics.
Theres a PHP library for producing sparklines, and even a sparkline web service, but I wanted something I could use to generate sparklines in both Java and JSTL (and I thought it would be a fun project). (Its also worth checking out Whys minimalist python sparklines, which encode the image data directly in the HTML as a data: URI [this library allows you to encode the images as using either data: format or javascript: format (supported by IE) in JSTL])
JSTL examples
< %@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" % >
< %@ taglib prefix="spark" uri="http://www.representqueens.com/taglibs/spark" % >
< c:set var="test" value="5, 35, 22, 19, 16, 10, 4, 33, 9, 12, 27, 36, 22" / >
< img src="< spark:bar name="test" color="red" / >" / >
will produce:
(I think the default size might be a little large).
The "name" attribute specifies the key to find the data (Uses JspContext.findAttribute). It expects the value to be either a List , a Number[], or a String of comma separated int values. Its the only manditory attribute.
The other attributes are width, height, spacing, color, highColor, lastColor, output. You can replace "bar" with "line" to get a linegraph (note: highColor and lastColor are currently not supported for line graphs).
The color attributes can either be a color name (a field name from java.awt.Color), or a HTML hex color (e.g. #ff0000 for red).
Enhancements:
- This release properly URL encodes parameters for server generated sparklines.
- This fixes an issue when using hex specified image colors.
- The tag parameter "background" has been added as a workaround for IE6 PNG transparency.

PloneWorldKit project is an out-of-the-box GIS for the Web.
PloneWorldKit is a mapping solution for ZOPE Plone.
It is built around the worldkit engine and makes annotating fairly easy.
worldKit is an easy to use and flexible mapping application for the Web (a lightweight GIS). Its a SWF-based app, configured by XML, and with data fed by RSS.
Main features:
- Ubiquitous use in the Flash Player and with RSS feeds.
- Highly configurable look and feel. Can use images for marking annotations.
- Integrates with weblogging tools, and any software producing RSS.
- Annotations updated in the background, live.
- Displays photos within the map.
- Zoom & Pan. Integrates with Zoomify for high resolution images.
- Accepts input for Collaborative Cartography.
- Annotations are categorizable. Javascript interface for GIS layer functionality.
- Connects annotations for GPS track routes.
- ntegration of worldKit as a content type (Map)
- Complete TTW (Through The Web) configuration of worldKit attributes
- ZCatalog based XML and RSS generation (config.xml, rss.xml)
- 3 annotation content types (Node, Line, Polygon)
- Base classes for content type developers
- Categorization of annotations TTW
- Time Navigation out of the box using "modified" index