GIMP is the GNU Image Manipulation Program. It is a freely distributed piece of software for such tasks as photo retouching, image composition and image authoring. It works on many operating systems, in many languages. GIMP has many capabilities. It can be used as a simple paint program, an expert quality photo retouching program, an online batch processing system, a mass production image renderer, an image format converter, etc. GIMP is expandable and extensible. It is designed to be augmented with plug-ins and extensions to do just about anything. The advanced scripting interface allows everything from the simplest task to the most complex image manipulation procedures to be easily scripted. GIMP is written and developed under X11 on UNIX platforms. But basically the same code also runs on Windows and Mac OS X.

Features and Capabilities:

• Painting
o Full suite of painting tools including Brush, Pencil, Airbrush, Clone, etc.
o Sub-pixel sampling for all paint tools for high quality anti-aliasing
o Extremely powerful gradient editor and blend tool
o Supports custom brushes and patterns

• System
o Tile based memory management so image size is limited only by available disk space
o Virtually unlimited number of images open at one time

• Advanced Manipulation
o Full alpha channel support
o Layers and channels
o Multiple Undo/Redo (limited only by diskspace)
o Editable text layers
o Transformation tools including rotate, scale, shear and flip
o Selection tools including rectangle, rounded rectangle, ellipse, free, fuzzy
o Foreground extraction tool
o Advanced path tool doing bezier and polygonal selections.
o Transformable paths, transformable selections.
o Quickmask to paint a selection.

• Extensible
o A Procedural Database for calling internal GIMP functions from external programs as in Script-fu
o Advanced scripting capabilities (Scheme, Python, Perl)
o Plug-ins which allow for the easy addition of new file formats and new effect filters
o Over 100 plug-ins already available

• Animation
o Load and save animations in a convenient frame-as-layer format
o MNG support
o Frame Navigator (in GAP, the GIMP Animation Package)
o Onion Skin (in GAP, the GIMP Animation Package)
o Bluebox (in GAP, the GIMP Animation Package)

• File Handling
o File formats supported include bmp, gif, jpeg, mng, pcx, pdf, png, ps, psd, svg, tiff, tga, xpm, and many others
o Load, display, convert, save to many file formats
o SVG path import/export


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The program will help free up memory, thus increasing the speed of your computer. In Memory Washer can set the minimum amount of free RAM, above which run the module and try to delete from memory unnecessary processes. In addition, you can configure the Windows Startup menu, and many other useful settings.

If you have noticed these days, many freeware are now bening made available by developers with installers as well as in portable versions, since many prefer to use the portable versions on their Windows computer. But still there are many software that are available in the installer forms only.

If you want to create portable versions of such installer based software, you can check out P-Apps. P-Apps isolates the application from operating system and enables it to be used from a USB memory stick or flash drive.
The way P-Apps works is that, it first takes a snapshot of your system before you install a program. It then again takes a snapshot of your system after you install the software. It then compares the two and stores the differences, like new files, new registry entries, etc, in the portable package of the installed software.

So after you download it, you have to first run a pre-install scan, then install the desired software and then run the post-install scan. The changes are then stored seperately.
While P-Apps is technically able to work on all such installation based programs, since it is a new program, there may be a possibility that it may not work with some; especially those that perform kernel changes.

Download P-Apps freeware here