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Stencil vs NameChanger: catalog facts
Stencil	NameChanger
Free Free and open source under the GPL-3.0-or-later licence.	Free Free download.
macOS, Linux	macOS
Native apps for both GNOME and macOS Combinable list of rename operations	Live preview of new names as you type Regular expression and sequence renaming
No Windows version Small project with a single main developer	macOS only No metadata-based renaming mentioned
Downloadable app	Downloadable app
Open source	Closed source
License: GPL-3.0-or-later	License not stated
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked September 24, 2026

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