REXPaint is a powerful and user-friendly ASCII art editor.
REXPaint Features
- Edit characters, foreground, and background colors separately
- Draw shapes and text
- Copy/cut/paste areas
- Undo/redo changes
- Preview effects simply by hovering the cursor over the canvas
- Palette manipulation
- Image-wide color tweaking and palette swaps
- True-color RGB/HSV/hex color picker
- Create multi-layered images
- Zooming: Scale an image by changing font size on the fly
- Custom fonts and support for extended characters and tilesets
- Browse art assets and begin editing at the press of a button
- Images highly compressed
- Export PNGs for use in other programs or on the web
- Import/export .ANS files for ANSI art
- Other exportable formats: TXT, CSV, XML, XPM, BBCode, C:DDA
- Import .TXT files
- Skinnable interface
A complete manual is included with the download, but you can also check it out here if you like (pure text, so if you view it directly in a browser make sure word wrapping is on).
See many of REXPaint's features in action below:

Using shape and text tools

Copy-paste tools (includes flipping/rotation)

Unlimited undo/redo history that remembers every possible image edit

Automatically preview effects under cursor (demonstrated here with the fill tool)

Convenient palette manipulation commands

Color picker (hue mode)

Color picker (hue mode)

Color picker (brightness mode)

Edit multiple layers separately

Font-swapping enables zooming/scaling (or loading of completely different font styles)

Built-in browser for quick editing, file manipulation, and copying between images

Use one of three included color themes for the interface, or easily make your own

Add custom fonts and even tilesets, including the option to work with more than 256 glyphs/tiles