Spirit - The animation tool for the web.
Twine - Twine is an open-source tool for telling interactive, nonlinear stories.
Marionette Studio - Marionette Studio is an online animation software for beginners and professionals. Animate 2D characters and environments in minutes with no prior skills.
RenPy - Ren'Py is a free and cross-platform visual novel engine that helps you use words, pictures, and...
Lottie by Airbnb - Easily add high-quality animation to any native app
Quest - Quest lets you create sophisticated text-based games, without having to program.