Windows Live Photo Gallery is the free image editing software from Microsoft. It is a part of Windows live suite. It comes with easy photo editing features, and lets you upload photos to facebook.
"Yes. There are free downloads of Picasso Photo available. This program assists you with organizing, editing, and sharing photos on your computer. There are other websites that offer a free download of this software."
There are several sites that offer free photo editing. You can try www.picnik.com/ or picasa.google.com/. Both are excellent.
One can acquire a free photo editing program by visiting a few sites that offer the free software. PC Mag and Tech Radar are a couple of the many sites that offer the service.
My personal favorite software for photo editing is The Gimp this is a free/GPL program which is east to use and excellent for photo editing.
Gimp can sharpen and is shareware
SmugMug is one of the best photo sharing websites, but it requires a membership fee. Photobucket and Picassa are popular free sites that offer lots of options for editing photos. Flickr is another popular photo sharing website.
There are several ways to learn about photo editing online for free. YouTube is a great option where you can look at videos of people explaining the concepts. Photo editing can also be learned for free through the site dummies and search photo editing.
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One of the most popular consumer photo editing packages is Adobe Photoshop Elements, which can be purchased at http://www.adobe.com/products/photoshopel/ . There are also some free solutions: one is called GIMP at gimp.org, which attempts to be a free general purpose program similar to Photoshop, and another is Google's Picasa which is specialized for photo editing at picasa.google.com .
There are plenty of web pages offering free photo editing. Some of them are pixlr, or ipiccy, or fotoflexer, or freeonlinephotoeditor, or befunky, or lunapic.
Free photo editing software can be picked up on the internet as well as from someone you know. Normally you want to search for "Open Source" or "free public" or just "Free" photo editing software and more than likely there will be dozens of software to find and download that will work for you.
I know there are several free photo editing programs online, but I have only used one Piknik. They have many free options available, however to get the most out of the program there is a fee associated with it.