Top Alternatives to OpenToonz

Pencil is a legacy open-source 2D animation and drawing software, primarily designed for creating hand-drawn animations. While discontinued, it offers a simple interface for traditional animation workflows across multiple platforms.

Synfig Studio is a powerful, free, and open-source 2D animation software designed for creating high-quality, professional-looking vector animations. It offers a timeline-based workflow, extensive control over layers and parameters, and support for various animation techniques, making it a robust tool for artists and animators.

Moho (formerly Anime Studio) is a powerful vector-based 2D animation software favored by both beginners and professionals. It specializes in character rigging, cut-out animation, and traditional frame-by-frame workflows, offering a comprehensive suite of tools for creating engaging 2D animations.

Tupi is a free and open-source 2D animation software designed with beginners and enthusiasts in mind. It provides a user-friendly environment for creating traditional frame-by-frame animations and offers vector-based drawing tools.

Animation Paper is a powerful and intuitive 2D animation software designed for traditional frame-by-frame animation. It focuses on providing a streamlined workflow for line testing and hand-drawn animation, supporting artists using drawing tablets and offering essential features like onion skinning and layer support.