I loved doing graphics designing and photo editing few months back and since that time i looked for many free softwares which can help me do some good photo editing and so i found and tried many softwares that can do the job for me and these are the ones that i found easy to use and good.

1. Picasa

Picasa is a free software download from Google that helps you:

Locate and organise all the photos on your computer. Edit and add effects to your photos with a few simple clicks with tools such as cropping, special effects, brightness adjustments and many more interesting features. Share your photos with others through email, prints and on the web.

But this software is for Windows only and like other google applications, this software is really easy to use.

Download : Picasa

Official Site : Picasa

2. GIMP

GIMP is the GNU Image Manipulation Program used to process digital graphics and photographs.

You can create graphics and logos, resizing and cropping photos, altering colours, combining multiple images, removing unwanted image features, and converting between different image formats. It can also be used to create different animations as well.

Download : GIMP 2.5.1

Official Site : GIMP

3. IrfanView

IrfanView is a freeware image viewer for Microsoft Windows that can view, edit, and convert image files and play video/audio formats.

Here are the features of IrfanView :

• Many supported file formats (click here the list of formats)
• Multi language support
• Thumbnail/preview option
• Paint option – to draw lines, circles, arrows, straighten image etc.
• Toolbar skins option
• Slideshow (save slideshow as EXE/SCR or burn it to CD)
• Show EXIF/IPTC/Comment text in Slideshow/Fullscreen etc.
• Support for Adobe Photoshop Filters
• Fast directory view (moving through directory)
• Batch conversion (with image processing)
• Multipage TIF editing
• File search
• Email option
• Multimedia player

and much much more

Download : Irfanview

Official Site : IrfanView

4. Paint.NET

Paint.NET is one of the best free photo editing software for Windows.

It features an intuitive and innovative user interface with support for layers, unlimited undo, special effects, and a wide variety of useful and powerful tools. An active and growing online community provides friendly help, tutorials, and plugins.

Download : Pain.NET

Official Site : Paint.Net Official Site

5. PhotoPlus 6

PhotoPlus is the amazing photo editing software that enables you to fix and enhance digital photos, create stunning bitmap graphics and even web animations.

Photoplus 6 is a free software but if you want to upgrade to PhotoPlus 8, you have to pay $9.99.

Download : PhotoPlus 6

6. Pixia

Pixia is a freeware bitmap graphics editor program for Windows which is available in many languages besides Japanese.

The program supports multiple layers, transparency effects, standard file formats and a number of RGB file formats including .PSD. The main file extension used by this program is .PXA.

Download : Pixia

7. ImageForge

ImageForge is a software that provides you with a set of powerful tools for painting and editing images, photos or other graphics.

You can create and edit images, acquire pictures from your scanner, digital camera or other Twain-compliant device, apply special effect filters, produce your own photo albums and simple slide shows, and much more.

Download : ImageForge

8. Adobe PhotoShop Album Starter

Adobe® Photoshop® Album Starter Edition software, the free software that makes it easier than ever to view, find, fix, and share your photo memories. With Adobe PhotoShop Album Starter you can Fix common photo flaws — like red eye, color, and brightness — in a single click.

• Easily share your memories! Attach photos to e-mail, send them to mobile phones or easily create a CD.
• Make your own prints, or order prints, photo books, and more online.
• Find any photo in a snap with automatic organization that lets you view all of your digital photos in one place using a familiar calendar view.

Before Downloading you should read the Terms.

Download : Adobe PhotoShop Album Starter

9. PhotoFiltre

PhotoFiltre is a complete image retouching program. It allows you to do simple or advanced adjustments
to an image and apply a vast range of filters on it.

It is simple and intuitive to use, and has an easy learning curve. The toolbar, giving you access to the standard filters with just a few clicks, gives PhotoFiltre a robust look.

Download : PhotoFiltre

10. Ultimate Paint

Ultimate Paint is a Windows graphics program for image creation, viewing and manipulation.

Ultimate Paint supports JPEG, GIF, PNG, BMP, PCX, AVI (reading only), TGA, WMF/EMF, ICO (reading only), IFF/LBM and WAP BMP image formats and Twain compatible scanners. You can easily print your image, setting its size, position and orientation.

Download : Ultimate Paint

So, here is a long list of good photo editing softwares that you can use. Just go with the one which suits you and things you want to do.