Compare software

BlockBlock vs RansomWhere?: catalog facts
BlockBlock	RansomWhere?
Free Free, with source code published on GitHub.	Free Free to download, with source code published on GitHub.
macOS	macOS
Real-time alerts for new launch items and other persistence Built on Apple's Endpoint Security Framework	Detects ransomware by behaviour rather than by known signatures Stops a suspicious process before letting you decide what to do
macOS only, version 10.15 or later Requires Full Disk Access and admin authorization	macOS only, version 10.15 or later Legitimate encryption tools can trigger alerts until allowed
Downloadable app	Downloadable app
Open source	Closed source
License not stated	License not stated
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 23, 2026

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