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Not everybody knows that when a file is erased of a computer, the information remains on the hard disk and can be recovered using different skills and applications like utilities of recovery and maintenance of the hard disk. Eraser talks each other of an advanced and sure tool for Windows that allows you to erase of finished and definitive form the files and files that you wish of your hard disk. Those that it has of exceptional this application is that sobreescribe the hard disk several times, using carefully chosen patterns, so that the files once erasures are irrecoverable.

GNU PG treats software as a set of applications and cryptographic hardware of free implementation that does not use the patent algorithm IT DESIGNS, by what it can be used without restrictions. It is compatible with PGP (Pretty Good Privacy) and it expires with the specifications of the RFC2440 (OpenPGP). It is a question of an application of free software and it can be used freely, General GNU distributed and modified under the terms of the Public License.

GIMP is the initials of GNU Image Manipulaton Program (Program GNU for the Handling of Images). This application software of free distribution is considered to be by many a reference to the modern programs of graphs. With this utility GNU photos can be retouched and compose and create all kinds images. When it was created it was necessary to write a powerful bundle of programming called GTK.

GIMP works in many operating systems, Unix, MS Windows and Mac OS X between others, also it is free in multiple languages. The program includes a big variety of filters and hardware. It can be used like a simple graphic publisher, a program advanced to retouch photos, a formats converter, an images visualizador, etc. The GIMP software can be controlled by means of scripts, this they turn him into a versatile and powerful tool for the automatic creation of graphs (for example for blogs and web pages). This versatility also allows to apply the same changes to several images simultaneously.

GNUPlot treats software as a powerful free application of GNU that serves to generate graphs of functions and sets of interactive information in two and three dimensions (2D and 3D). His potency allows to work both with functions (of 2 and 3 variables) and with sets of information. The representation of the information admits an enormous quantity of formats and dispositions (curves, surfaces, outlines, vectors, bars diagrams, etc.).

GNUPlot is compatible with the operating systems UNIX, IBM OS/2, MS Windows, TWO, Macintosh, VMS, Atari and many other platforms. The software has copyright but it is of free distribution therefore it is not necessary to pay for his use. This application developed in 1986 with the idea of helping scientists and students to visualize mathematical functions and information. Nevertheless, since then it has been evolving little by little and new functionalities have been added to him.

GNUPlot supports multiply exit formats: for screen, for printer or for file (eps, fig, jpeg, Latex, metafont, pbm, pdf, png, postscript, svg...).

A recommended web site: A million utilities.