Apps similar to Spectrum Shift Paint include OpenToonz, which is free and open source. Other options are Synfig Studio, enve, Animation Paper and Expressive Animator. You can choose from more than 10 Animation Makers like Spectrum Shift Paint for Windows, Mac, Linux, Android and iPhone.
Open-source 2D animation software supporting raster and vector workflows, node-based compositing, plug-in extensions, anti-aliased painting, and support for major platforms, developed in collaboration with Studio Ghibli and suitable for commercial projects.
Japan
Open-source 2D software for creating animations with vector and bitmap artwork, advanced bone rigging, tweening, timeline editing, onion skinning, multi-layer effects, audio sync, and multi-format rendering on Windows, Linux, and macOS.
Russia
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.
Poland
EU
Top quality software for doing hand drawn animation. Very easy and fast to work with. Simple, yet powerful.
DenmarkEU
Create interactive SVG animations with precise keyframe and easing control, custom vector paths, shape and text editing, gradients, masks, boolean operations, blend modes, snap, grid, advanced export options including Lottie, GIF, and no JavaScript required.
RomaniaEU
Create frame-by-frame animation, sketches, and storyboard projects using multiple painting tools, pressure sensitivity, onion skinning, stamp features, layer support, dynamic backgrounds, and easy export to PDF or animatics for sharing or further creative use.
Taiwan
Toon Boom Harmony Network is the industrial animation software for studios worldwide.
Canada
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.
FranceEU
Callipeg is a 2D hand-drawn animation app available on iPad, iPhone (Callipeg mini) and Android. It offers both frame-by-frame and keyframe animation tools in a workspace suitable for a range of projects, from simple scenes to complex sequences.
FranceEU
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.
FranceEU
RoughAnimator is a fully featured hand drawn animation application that runs on Android, iOS, Mac OS, and Windows.
United States
Draw frame-by-frame animations and create GIFs directly in your browser. Simple, fun, and powerful animation tool with onion skinning, timeline controls, and instant GIF export.
United States
