Sumopaint is a online editor that allows you to manage basic photo editing and offers a profound set of color correction tools for drawing and designing, large number of filters, effects and brushes are available too.
Sumopaint operates much like Photoshop. You can crop, color, or otherwise edit preexisting photos or draw a new picture with the imaging application. The biggest difference between the two? Photoshop retails for several hundred dollars, and Sumopaint is available for free. (The application also offers two paid lifetime license versions with extra features and no ads for $9 and $19.) A few Sumopaint tools are only available in the paid versions; however, you can access enough editing tools for free to create dozens of unique effects.
The basics of how Sumo Paint works
Sumopaint Documentation on the following:
1. Getting Started
2. Discovering Tools
3. Layers
4. Using Adjustment
5. Using Filters
6. Canvas Options