Paint.NET è un software open source.
E’ un ottimo software di grafica grazie ad alcune caratteristiche come la semplicità d’uso e un buon numero di funzionalità.
Può gestire più layer (livelli) sovrapposti e permette un uso illimitato della funzione “undo” che permette di annullare le modifiche fatte su un’immagine.
Ha una vasta gamma di effetti per le immagini, come la rimozione degli occhi rossi, la rotazione delle immagini, la distorsione etc.

Piattaforma:
Windows XP (SP2 or later),Windows Vista,Windows Server 2003 (SP1 or later)

Necessario .NET Framework 2.0

Features

CitazioneSimple, intuitive, and innovative user interface
Every feature and user interface element was designed to be immediately intuitive and quickly learnable without assistance. In order to handle multiple images easily, Paint.NET uses a tabbed document interface. The tabs display a live thumbnail of the image instead of a text description. This makes navigation very simple and fast.
Layers
Usually only found on expensive or complicated professional software, layers form the basis for a rich image composition experience. You may think of them as a stack of transparency slides that, when viewed together at the same time, form one image.
Active Online Community
Paint.NET has an online forum with a friendly, passionate, and ever-expanding community. Be sure to check out the constantly growing list of tutorials and plugins!
Frequently Updated
Updates usually come about every 4 to 6 weeks, and contain new features, performance improvements, and bug fixes. Upgrading to the latest version is very simple, requiring only two clicks of the mouse.
Special Effects
Many special effects are included for enhancing and perfecting your images. Everything from blurring, sharpening, red-eye removal, distortion, noise, and embossing are included. Also included is our unique 3D Rotate/Zoom effect that makes it very easy to add perspective and tilting.
Adjustments are also included which help you tweak an image's brightness, contrast, hue, saturation, curves, and levels. You can also convert an image to black and white, or sepia-toned.
Powerful Tools
Paint.NET includes simple tools for drawing shapes, including an easy-to-use curve tool for drawing splines or Bezier curves. The Gradient tool, new for 3.0, has been cited as an innovative improvement over similar tools provided by other software. The facilities for creating and working with selections is powerful, yet still simple enough to be picked up quickly. Other powerful tools include the Magic Wand for selecting regions of similar color, and the Clone Stamp for copying or erasing portions of an image. There is also a simple text editor, a tool for zooming, and a Recolor tool.
Unlimited History
Everybody makes mistakes, and everybody changes their mind. To accommodate this, every action you perform on an image is recorded in the History window and may be undone. Once you've undone an action, you can also redo it. The length of the history is only limited by available disk space.
Open Source and Free

DOWNLOAD

Traduzione in italiano, language file per la versione definitiva di Paint.NET 3.22
Link diretto
Info sulla traduzione
Istruzioni per la traduzione:

Citazione di: mf3imp Lo potete scaricare come allegato in questo post, le istruzioni sono sempre le stesse: decomprimete l'archivio zip nella cartella in cui è installato Paint.NET 3.20, e al successivo avvio il programma sarà in italiano (eventualmente, se ciò non dovesse accadere, scegliete l'italiano nel mennù help/languages).

Guida in Italiano Paint.Net

Paint.NET aggiornato alla 3.31

Citazione di: ChangeLogPaint.NET v3.31 Released: May 1st, 2008 -  Download
This is mostly a servicing release to fix a few important bugs.

    * New: Enabled integration with Window Clippings, which is a high quality screen capture utility by Kenny Kerr.
    * Fixed: Fixed a crash with the Open/Save dialogs if the Documents or Pictures directories were either inaccessible or if the user did not have certain file system permissions.
    * Changed / Fixed: The hotkey for Adjustments -> Levels is now Ctrl+Shift+L instead of Ctrl+Alt+L. This was preventing certain characters, such as the Polish 'ł', from being typed.

Tratto da: >>>

Dalla versione 3.30 sono disponibili anche le seguenti novità:

Citazione di: ChangeLog
    * New: Italian translation.
    * New: Ability to save PNG's at 8- and 24-bit color depths.
    * New: Ability to save BMP's at 8-bit color depth.
    * New: "Auto-detect" bit-depth option for PNG, BMP, and TGA file types. It will analyze the image and determine the lowest bit-depth that can still save the image without quality loss.
    * New: "Fragment" blur effect, by Ed Harvey
    * New: The "Polar Inversion" distortion effect has been enhanced to allow changing the rendering offset, and the behavior for "edge" pixels (clamp, reflect, or wrap).
    * New: For developers, added a Color Wheel control to IndirectUI for use in effect plugins.
    * New: For developers, added ability to customize certain properties of the effect configuration dialog via IndirectUI.
    * New: For developers, IndirectUI can now be used to write configuration UI for file types.
    * New: For developers, IndirectUI has a new radio button control type for enumerations, and some new property constraint rules.
    * Changed: Most effects and adjustments, including plugins that use IndirectUI, have been visually refreshed. The new look is cleaner and more compact. These changes are shown in more detail at http://blog.getpaint.net/2008/03/10/cleaning-up-the-ui-for-paintnet-v330/
    * Fixed: Various UI issues with the Levels adjustment.
    * Fixed: When pasting text into the Text tool with Ctrl+V, it would hide the nub for moving the text.
    * Fixed: If the startup tool was set to the Zoom or Pan (Hand) tool, then the toolbar would render incorrectly.
    * Fixed: Thumbnails for PDN images now include transparency, which improves their appearance in Windows Vista.
    * Fixed: In some cases, an exponential property slider would get "stuck" at some values when using up/down keyboard keys. This mostly affects some effect plugins.
    * Fixed: When using keyboard navigation, sometimes the File menu would scroll its items out of view.
    * Fixed: Some crashes that were tracked down to out-of-bounds coordinate values in certain effects.
    * Fixed: The installer would fail if Paint.NET had never been installed before, and was being installed to any non-default directory. This bug only affected version 3.22.

[Home] Paint.NET

Ciao !!

Aggiornato alla 3.35 Beta2.

Citazione di: ChangeLog
* Changed: When using a selection mode other than "replace", it will now draw the selection outline so that you can see both the original and resulting selection areas. Before, it would only draw the resulting selection area outline, which made modes such as Intersect hard to use.
* Changed: The canvas background is now a solid color instead of a gradient. The gradient was causing certain tone misjudgments related to bright versus dark colors.
* Changed: Shortcut key for Sepia is now Ctrl+Shift+E. The shortcut for Posterize is now Ctrl+Shift+P.
* New: When holding Ctrl or Alt for a selection tool, the cursor now has a plus or minus indicator.
* Fixed: The Resize dialog had some rounding errors with the "Maintain aspect ratio" feature, which caused a few discrepancies and even a spurious "out of memory" error.
* Fixed: Some quirks with the Color Wheel control for IndirectUI-based effect plugins.
* Fixed: Several miscellaneous and rare crashes.
* Fixed: The installer would display a bizarre error if a "blank" install folder was attempted.
* Fixed: The installer now only accepts absolute path locations, instead of relative ones. This fixes an ambiguity between where Paint.NET believes it is installing itself to, and the directory that Windows Installer actually uses.

Maggiori informazioni al seguente Link: Paint.Net > Roadmap and Change Log

Ciao !!

Aggiornato alla v3.35

ChangeLog:

Citazione di: ChangeLog
New: Posterize adjustment, by Ed Harvey.
New: Intersect selection editing mode.
Improved: Dramatically improved selection editing performance for the Add and Subtract modes (and also for Intersect). The performance used to be dependent on image size, and thus was often unusable on images larger than 1024x768 pixels. It is now dependent only on selection complexity (number of polygon edges) -- the improvement is generally between 3x and 1000x.
New: When holding Ctrl or Alt for a selection tool, the cursor now has a plus or minus indicator.
Changed: The canvas background is now a solid color instead of a gradient. The gradient was causing certain tone misjudgments related to bright versus dark colors.
Changed: Shortcut key for Sepia is now Ctrl+Shift+E. The shortcut for Posterize is now Ctrl+Shift+P.
Changed: Hotkeys for selection modes are now Left click for Replace, Control+Left click for Add (union), Alt+Left click for Subtract (difference), Ctrl+Left click for Intersect, and Ctrl+Right click for Invert (xor).
Changed: When using a selection mode other than "replace", it will now draw the selection outline so that you can see both the original and resulting selection areas. Before, it would only draw the resulting selection area outline, which made modes such as Intersect hard to use.
Fixed: The Resize dialog had some rounding errors with the "Maintain aspect ratio" feature, which caused a few discrepancies and even a spurious "out of memory" error.
Fixed: Some quirks with the Color Wheel control for IndirectUI-based effect plugins.
Fixed: Several miscellaneous and rare crashes.
Fixed: The installer would display a bizarre error if a "blank" install folder was attempted.
Fixed: The installer now only accepts absolute path locations, instead of relative ones. This fixes an ambiguity between where Paint.NET believes it is installing itself to, and the directory that Windows Installer actually uses.
Fixed: Sometimes pasting would result in a crash when certain types of malfored data were on the clipboard.
Fixed: It was possible to get around some of the protections imposed by the IndirectUI system. This was causing instability with some effect plugins such as "Fern Fractal".
Fixed: There were some issues with the implementation of "linked" sliders for effects based on IndirectUI.

Tratto da: Roadmap & ChangeLog.

Ciao ...

Aggiornato alla v3.36

ChangeLog:

CitazioneImproved: Effect rendering should be a little faster now.
Changed: Implemented some changes to the "Add Noise" effect that were suggested by a forum member.
Changed: The canvas background color is now always #c0c0c0.
Changed: The auto-updater should now correctly detect .NET 3.5 and newer, which will help to save bandwidth when Paint.NET v4.0 is released (it will require .NET 3.5).
Fixed: Paint.NET now works on a system that has the .NET 3.5 SP1 "Client Profile" installed.
Fixed: When zoomed in and the cursor is to the top-left of the image (negative coordinates), the ruler is now highlighted in the correct area.
Fixed: The effect rendering system no longer sets the "Tag" property on the configuration dialog.
Fixed: Some incorrectly authored plugins would cause a crash when loading their support details (author, copyright, etc.).
Fixed: There was a bug in the color wheel for IndirectUI that caused it to show the wrong values at initialization.
Fixed: There was a performance problem for effects that used the IndirectUI color wheel control.
Fixed: In some rare cases, Paint.NET would crash while shutting down.
Fixed: When using the "Fixed Ratio" feature of the Rectangle Selection tool, it would crash if 0 was specified for both the width and height.

Tratto da: Roadmap & ChangeLog

Ciao ...