Free canvas software for windows

3D Canvas is a real-time 3D modeling and animation program that incorporates an intuitive drag-and-drop approach to 3D modeling.
You can construct complex models from simple 3D primitives, or create new ones using 3D Canvas Object Building Tools.
Modeling tools are provided to deform, sculpt, and paint 3D objects. Creating an animated scene is as simple as positioning the objects within your scene for each point in time in your animation.
3D Canvas will ensure that the resulting animation runs smoothly. No complicated scene timelines are required. Your animation can be stepped through a frame at a time, viewed in real-time, or recorded to a Video (AVI) file so that you can distribute your creation.
Tool roll-up groups allow you to customize the 3D Canvas interface so that only those items you use most frequently are visible. Since 3D Canvas imports many popular 3D file formats, many of the public domain 3D models available on the Internet can be incorporated in your scenes.

Enhancements:
- The freeware version of 3D Canvas now includes import support for:
- Biovision (bvh)
- MD2
- Neutral Object Format (nof)
- Raw Triangles (raw)
- Wavefront (obj)
- WorldToolKit (nff)

mtPaint 3.31 is a free painting program letting you to easily create pixel art and manipulate digital photos, which you can freely use, modify and distribute it according to the GNU General Public License. Currently mtPaint is maintained by Dmitry Groshev.

mtPaint uses the GTK+ toolkit (version 1 or 2) and runs on PC's via the GNU/Linux or Windows operating systems. Due to its efficient design it can run on older PC hardware (e.g. a 200MHz CPU and 16MB of free RAM).
By default it is in the English language, but there are also translations available for other languages such as Spanish, Czech, French, Portuguese and Brazilian Portuguese.

Major Features:

1. Interface
   • Toggle the toolbars on or off at the touch of a button.
   • Horizontal or vertical split view mode.
   • Pixel grid for guidance at high levels of zoom.
   • Move the mouse pointer with exact precision using the arrow keys.
   • Extensive shortcut keys used to improve productivity.
   • 12 Image clipboard.
   • Up to 1000 undo steps.
   • Zoom levels between 10% and 2000%.
   • Pan window for quickly navigating a large image, or at a high zoom.
   • Browse different files passed at the command line.
   • Translations: Chinese (Simplified), Chinese (Taiwanese), Czech, Dutch, English (UK), French, Galician, German, Italian, Japanese, Polish, Portuguese, Portuguese (Brazilian), Russian, Slovak, Spanish, Swedish, Turkish.
   • Use a pressure sensitive graphics tablet.
   • Limit memory used for undo images.
   • Grab screenshots.
2. Pixel Art
   • Edit indexed palette or RGB images.
   • Save and load BMP, GIF, JPEG, LSS, PNG, TGA, TIFF, XPM, XBM files.
   • Extensive palette features - load, save, sort, edit, posterize, quantize, remove duplicate colours, remove unused colours, colour protection, palette shifting.
   • Image channels: Alpha, Selection, Mask. All saved to a PNG file.
   • Up to 100 layers.
   • Create animations by moving layers, or shifting palettes.
   • Create animated GIF's using Gifsicle.
   • 81 brush presets.
   • 100 brush patterns.
   • User defined gradients.
   • Copy and paste using rectangle or polygon shapes.
   • Tools to shuffle pixels, flood fill, draw straight lines, smudge, clone, paste text, draw/fill rectangle/ellipses.
3. Image Manipulation
   • Quickly transform image gamma, brightness, contrast, saturation, hue, posterize from a single dialog, and preview the results in real time.
   • Apply various effects such as invert, greyscale, isometric transformations, edge detect, sharpen, unsharp mask, soften, Gaussian blur, emboss, bacteria.
   • Use gamma correction on effects to improve the quality of various effects.
   • Crop at the touch of a button.
   • Resize the canvas.
   • Rescale the canvas, enlarging or reducing, using several filter methods.