I focused for a long time on creating a new free program for .NET Compact Framework devices. This program is intended for image editing. It's source is also available and any developper could help!

Some of its function are (all that are contained are working):
# Point-and-click painting with colors and sizes and different movement behaviours. On PCs or Pocket PCs, you can click to move and paint.
# Effects (Negative Colors, Black & White, Lightness).
# File functions. Mini file browser included. Opening File supported. Saving File supported (.bmp). New Image supported. Importing image into current image supported.
# Image Editing (Flipping, Resize, Paper Size).
# Drawing (Line, Rectangle, Polygon, Text, Ellipse).
# Undo (one level).
# Making Selections: Select a region and edit it. Also supported are Copy, Paste and Fill (fill is not exactly the usual one. this function replaces pixels with the same color in the selected region with another color).
# Comprehensive cursor-based GUI/interface.
# Zoom.
# Advanced Cursor movement (normal, accelerated and "paint when move"). Also, 4 cursor styles.
# Auto-Loading (on start) and auto-save (on exit) options to the registry.

In addition, Pocket Image Editor is also intended to help developpers for .NET Compact Framework. It works on multiple platforms and customizes itself accordingly. It contains useful windows you could use in your application such as File Explorer, Color Picker, File Save, Get Points, Input Dialog, Save Image to BMP file, Image Editing Functions etc. It can also be called by a program as a modal dialog box to return an image.

Requirements: One of the following platforms supporting Microsoft's .NET Compact Framework:
# Windows Mobile 2003 or later (Smartphones and Pocket PCs)
# PCs with Windows. Microsoft .NET Compact Framework or .NET Framework must be installed for the program to be executed.