Photl stands for Photo laboratory and it's a collection of exclusive photo images of high resolution which you can download for free. Registration not required.
Sprixi is an image search engine that helps you find and choose images that you can use, for example, for a presentation, a blog, or an email. Registration not required.
Bing features superb image search capabilities. Most notably, the Microsoft's search engine allows you to view and filter image results by several attributes (size, layout, color, styles), making it easy to find exactly what you need. Registration not required.
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