I trust many of us like to free edit our digital photos much, so here lists the common & famous free photo editing software:

1. GIMP, renowned as “free Photoshop”, open source software:http://www.gimp.org/downloads/
2. Google Photo Online (Previously known as Picasa):https://photos.google.com/
3.Picmonkey – free online image editing:http://www.picmonkey.com/
4. Pixlr – another online photo editor:https://pixlr.com/
5. Another cross-platform online photo edit tool – Fotor:http://www.fotor.com/
6.Getpaint – same like pixlr:http://www.getpaint.net/index.html