Marionette Studio is a development software and applications platform that enables users to quickly and easily create interactive, real-time experiences for web, mobile, and desktop applications. It has a drag-and-drop user interface that allows users to build applications with ease. Marionette Studio also provides an extensive library of components and tools that can be used to develop and deploy projects quickly. It offers a wide selection of customizable components and templates, from basic elements such as buttons and text boxes to more complex compositions such as forms and maps. The platform also has an extensive library of third-party plugins and integrations to help extend the capabilities of the platform. Marionette Studio also allows users to debug, test, and deploy their applications via the cloud or local servers.
Discontinued KenneyNL Reported in the forums, Kenney Studio is discontinued. Source: https://itch.io/t/116590/purchase-kenny-studio
Synfig Studio
DragonBones
Spine
Jpixel
Spriter
Pixelesque
Creature
Kenney Studio
AnimeEffects
Sprite Something
Rubber Hose 2
Discontinued Official product page not available.