Photo/ images softwares

Paint.NET
Strong candidate as a potential substitute for Photoshop for beginner/intermediate users.
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IrfanView
The Swiss Army knife of image viewers/editors. Extremely popular.
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 FastStone Image Viewer
One of the best image viewer, converter & editor bundles.
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  PhotoScape
Another good free and easy-to-use photo editing application.
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Google Picasa
Powerful photo manager software from Google. Includes 1-click photo retouching features. Easy online photo sharing.
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