Pixlr: Pixlr is a free online photo editing tool that offers a wide range of features and options for creating and editing images. It has a user-friendly interface and provides various tools for image manipulation, such as filters, layers, and adjustments.

Figma: Figma is a free web-based design tool that allows for collaborative designing and prototyping. It offers a wide range of design features, including vector editing, prototyping, and design components. Figma is popular among UI/UX designers and is widely used for creating interactive designs and prototypes.

Gravit Designer: Gravit Designer is a free vector design tool that provides a wide range of features for creating graphics, illustrations, and logos. It has a simple and intuitive interface and offers a variety of tools for vector editing, including shapes, text, layers, and effects.

Inkscape: Inkscape is a free and open-source vector graphics editor that is comparable to Adobe Illustrator. It offers a wide range of tools for creating vector graphics, such as drawing tools, shape tools, and text tools. Inkscape is popular among designers who prefer open-source software and it is available for Windows, Mac, and Linux.

Lunacy: Lunacy is a free graphic design software for Windows that is compatible with Sketch files. It offers a wide range of design features, including vector editing, prototyping, and asset management. Lunacy is a good alternative for Windows users who want a free design tool that can work with Sketch files without needing a Sketch license.

Please note that while these alternatives are free to use, they may also offer premium features or subscription plans with additional functionalities at a cost. It’s always recommended to thoroughly review the features and limitations of each tool before choosing the one that best fits your needs.