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OpenToonz vs Flipbook: catalog facts
OpenToonz	Flipbook
Free The software is free under its open-source licence. Hosting, hardware and external…	Free Free and open source under GPL-3.0-or-later.
Windows, macOS, Linux	Linux
It carries real production features including an exposure sheet, onion skinning, scan and cleanup tools and a plugin…	Simple frame-by-frame drawing workflow Reusable colour palettes across projects
The interface comes from a studio pipeline and is genuinely hard to learn, and stability has historically been…	Early version with file format changes between releases Linux and GNOME only
Downloadable app	Downloadable app
Open source	Open source
License: BSD-3-Clause	License: GPL-3.0-or-later
Not stated if an account is needed	No account needed
Not stated if it works offline	Works offline
Official website Full listing and sources Checked September 22, 2026	Official website Full listing and sources Checked October 1, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.