SpeedyPainter is a free painting software designed for Windows, catering to artists and hobbyists alike. This program is built using C++ and employs the OpenGL graphics library, providing a smooth and responsive user experience. Key features include a reference view that follows canvas movements, which can be activated with the F3 key, as well as support for multiple layers, enhancing the creative process. Additionally, it offers the ability to adjust stroke size and opacity based on pen pressure, making it compatible with Wacom tablets for a more natural drawing experience.

Beyond standard painting capabilities, SpeedyPainter allows users to export videos of their drawing process and replay them, which can be beneficial for tutorials or personal review. Users can also load and save their drawing processes into files, ensuring that their work can be easily managed and revisited. The canvas can be flipped or rotated, providing flexibility in how the artwork is approached. Overall, SpeedyPainter serves as a robust tool for digital artists seeking a free solution.