Outline Manager, developed by Jigsaw
TagSpaces is an offline, open source, document manager with tagging
Fast, disk space efficient package manager
Browser fingerprinting library
Installed on a smartphone that has no connection to any network
The AirGap Wallet is installed on an everyday smartphone
Sentry SDK for React-Native
Twake is a secure open source collaboration platform
An implementation of the exact same app in Firestore, AWS Datastore