There are several free 2D animation software options available for download. Here are some popular ones along with their download links:
Blender (https://www.blender.org/): Blender is a versatile and powerful open-source 3D creation suite that also includes 2D animation features. It offers a wide range of animation tools and supports various file formats. You can download Blender for free from their official website.
Pencil2D (https://www.pencil2d.org/): Pencil2D is a free and open-source 2D animation software designed for traditional hand-drawn animation. It provides a simple and intuitive interface for creating frame-by-frame animations. You can download Pencil2D from their official website.
Synfig Studio (https://www.synfig.org/): Synfig Studio is a free and open-source 2D vector-based animation software. It offers a robust set of features including skeletal animation, gradient support, and layer-based animation. Synfig Studio can be downloaded from their official website.
Krita (https://krita.org/): While primarily known as a digital painting software, Krita also provides powerful 2D animation capabilities. It offers a user-friendly interface and a range of tools for creating frame-based animations. Krita is available for free download from their official website.
OpenToonz (https://opentoonz.github.io/e/): OpenToonz is an open-source 2D animation software used by professional animators. It offers a comprehensive set of tools for traditional and cut-out animation. OpenToonz can be downloaded for free from their official website.
TupiTube (https://www.maefloresta.com/): TupiTube is a free and easy-to-use 2D animation software suitable for beginners. It provides a simplified interface and basic animation tools to create simple animations. TupiTube can be downloaded from the official website of Maefloresta, the company behind the software.
Please note that while these software options are free to download and use, some may have additional features or paid versions available for more advanced functionality. Make sure to check their respective websites for any specific requirements or limitations.