Blender: Blender is a free and open-source 3D animation and modeling software. It provides a wide range of tools for creating 3D characters, environments, and animations. It has a robust feature set, including support for physics-based simulations, particle systems, and compositing.
Maya: Maya is a professional-grade 3D animation and modeling software. Although it's not free, it offers a free trial version for students and non-commercial use. It's widely used in the animation and film industry and has a wide range of tools to create 3D characters, environments, and animations.
SketchUp: SketchUp is a free 3D modeling software that is easy to learn and use. It's great for creating architectural models and simple animations. It has a simple interface that makes it easy to quickly create 3D models, and it can export to various file formats, including animation formats like FBX.
Animaker: Animaker is a free online animation software that allows you to create 2D animations, 3D animations, and explainer videos. It offers a wide range of animation templates, characters, and backgrounds to choose from, and it's very user-friendly.
Giphy: Giphy is a free online GIF animation tool that allows you to create animated gifs from video files or images. It offers a wide range of features to edit and customize your gifs, including adding text, stickers, and filters.
Adobe After Effects: Adobe After Effects is a widely used software for creating professional-grade animations, special effects and motion graphics. It's not free, but it offers a free trial version that you can use to test its features.
Please note that while these software are free, some of them may have a paid version or options for additional features.