This page can be used offline, on an air gapped computer. It's auto build by github from the public source code from the github repo.
No private info is sent anywhere. Key is never stored and signing takes place in your browser only.
When hitting "Forward to cycle", the signed tx__ only is sent to the Nyzo Client relay, not the key itself.
Simpler, full vanilla versions with minimal libs could come later on. Donations are always welcome: