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Whisp vs Heynote: catalog facts
Whisp	Heynote
Free Free and open source under the GPL 3.0 or later.	Free Free download with source code on GitHub.
Linux	Windows, macOS, Linux
Start typing immediately with no files or titles to manage Text expansion and automatic checklists	Blocks with per-block language, highlighting and auto-format Built-in calculator blocks with units and currencies
Built for GNOME on Linux only Not meant for organising a large note collection	A scratchpad rather than a full note organiser or editor
Downloadable app	Downloadable app
Open source	Closed source
License: GPL-3.0-or-later	License not stated
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 October 1, 2026	Official website Full listing and sources Checked October 1, 2026

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