Moho Alternatives for Linux

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.

Enve is a free and open-source 2D animation app. It can create both vector and raster animations and even use sound and video files. It has been created with flexibility and expandability in mind.

Tupi is a design and authoring tool for digital artists interested in 2D Animation, fork of the KToon project, offering an interface experience focused on 8-100 years olds.

Pencil is an animation/drawing software for Mac OS X, Windows, and Linux. It lets you create traditional hand-drawn animation (cartoon) using both bitmap and vector graphics.

OpenToonz is based on software "Toonz" which was developed by Digital Video S.p.A. in Italy

TVP Animation is the leading paperless drawing and animation tool, able to imitate traditional techniques such as Pen Brush, Gouache, Watercolour, Pencil, Felt-tip and Airbrush, and animate them over frames.

Tahoma2D is a powerful program for 2D and stop motion animation. Tahoma 2D is based on OpenToonz.

Top quality software for doing hand drawn animation. Very easy and fast to work with. Simple, yet powerful.

CreaToon is a free easy to use animation program. It is different from other programs however, because you don't draw the objects in the program, it is a cutout based animation program.