DrPic includes basic functionality like cropping and re-sizing, brightness and contrast adjustments, sharpen, adding text, and a little more to make your images look fabulous.
Aviary allows you to edit images, topography, audio and color.
AlilG includes some basic photo editing tools which allows you to create a new image, edit it and import photos to your image document.
LunaPic allows you to edit your profile pictures for Facebook and Myspace.
Picnik includes a number of special effects from artsy to fun.
#16 Online Image Editor
Online Image Editor allows you to edit your pictures online.
Splashup is formerly known as Fauxto. It has a lot of tools and features for a free online image editing.
Photoshop has a lot of tools needed for basic photo editing. It will allow you to crop and re-size, apply basic touch ups, work with color, or edit the photo by adjusting the sharpness, focus and more.
FotoFlexer integrates all the major online photo services, such as Flickr, Photobucket or Facebook.
#20 Web Photo Resizer
Web Photo Resizer allows you to resize your photos online.