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Pencil2D vs Flipbook: catalog facts
Pencil2D	Flipbook
Free Free and open source under the GPL, developed entirely by volunteers.	Free Free and open source under GPL-3.0-or-later.
Windows, macOS, Linux	Linux
Frame-by-frame drawing with onion skinning, which is what hand-drawn animation needs Bitmap and vector layers in one project	Simple frame-by-frame drawing workflow Reusable colour palettes across projects
Minimal by design; complex productions outgrow it quickly No rigging, tweening or particle systems	Early version with file format changes between releases Linux and GNOME only
Downloadable app	Downloadable app
Open source	Open source
License: GPL-2.0	License: GPL-3.0-or-later
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked September 21, 2026	Official website Full listing and sources Checked October 1, 2026

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