1.paint.net
Paint.NET is currently available only for Windows platforms, but because it is open source software, other paint.net based revision software (such as Paint-mono) has come into being, making the mapping function available on other platforms and having a Chinese translation version.
Website:http://www.getpaint.net/
2. Photoscape
Software lightweight and fast, repair the function of the map is not outstanding, but provides a simple way to collage, making GIF animation, split photos, etc., have its good place.
Website:http://www.photoscape.org/
3. Picmonkey
Picmonkey is a free repair map page, if you do not want to download and install any software, can be directly open to use, very convenient, but also functional and simple, although there are paid to the advanced version, but generally enough.
Website:http://www.picmonkey.com/
4. GIMP
GIMP can be run on a variety of platforms, such as Linux, Microsoft Windows, Mac OS X, Sun OpenSolaris, and so on, with a wide range of applications, and the interface is relatively close to the mainstream of Photoshop, very simple and easy to use.
5. Artweaver
Supports a variety of files such as BMP, GIF, JPEG, PCX, TGA, IFF, PNG and PSD, and has built-in Chinese version.
Website:http://www.artweaver.de/en
In addition to the above software, Google + can directly edit photos, the camera brand will have their own software such as "Nikon Capture nx-d", mobile phone repair software also has a lot of choices, and women love to use the beautiful mito and so on, but also free.