It is both a back-end and front-end application meaning that you can create your animation and render it in the back-end later. Synfig Studio is a free cross-platform software. Rick and Morty was animated using Toon Boom 2D animation software 2. However, if you're planning on getting into animation professionally, Toon Boom is definitely worth pursuing! The learning curve is steep so it can take a little more time to learn animation with this tool.
If you're keen to get into 2D animation, here's a look at 7 of the best 2D animation software programs, both free and paid. From film and games to ads and educational resources, animation is used pretty much everywhere! 2D animation specifically, has been with us throughout the century, though these days it's getting increasingly more sophisticated with animators inventing new styles and blurring the lines between 2D and 3D.