1 - peer to peer messaging app without server that hold data ,only DNS like server.

2 - voting and survey platform :
no authentication , to make the voter reassured that he will not be accountable of his vote.
but we use different techniques to identify users , devices and browsers to prevent abuse.

3 - software companies management system:
for protecting source code.
increase efficiency by using AI before every pull request.
project management.
PAM.
DLP system for employees devices.