Ella is described as '(an acronym for Elegant Light Linux Animator) is a light animation software intended to achieve a aim of the Linux world : a functionnal and WYSIWYG (What You See Is What You Get) 2D animation sofware'. There are more than 50 alternatives to Ella for a variety of platforms, including Windows, Mac, Linux, Online / Web-based and Android. The best alternative is Inkscape, which is both free and Open Source. Other great apps like Ella are Sketch (Paid), Vectr (Free), CorelDRAW Graphics Suite (Paid) and Synfig Studio (Free, Open Source).
Vectr is a free graphics editor. Vectr is collaborative like Google Docs, and runs both in your web browser and on your desktop as a native app. With an intuitive interface, Vectr is easy to learn and use.
Synfig is a free and open-source, industrial-strength, vector-based 2D animation app designed for producing feature-film animations. It eliminates the need to create animations frame by frame. It is available for Windows, Linux, and macOS.
Pencil2D is an opensource animation/drawing software for Mac OS X, Windows, and Linux, based on old Pencil software. It lets you create traditional hand-drawn animation (cartoon) using both bitmap and vector graphics.
Karbon, component of Calligra Suite , is the scalable vector drawing application in KDE. It allows artists to create complex drawings without losing image quality when zooming in on, or resizing the drawing.
Draw, part of the Apache OpenOffice suite, is a graphics editor that gives you the tools to communicate with visuals and diagrams. With a maximum page size of 300cm by 300cm, Draw is powerful tool for posters, graphs, charts, and more.