Criteria:
Strong privacy control, does not expose personal data such as contact list, phone number, email address, ip address and is not exposed via metadata harvesting i.e. "friend request"
Supports all major platforms including Android/iOS/Mac/PC, must also be easy to setup and use securely.
Low on battery and resources, can be used on cheap and old devices
Sorry for not self-assigning this first, but I've done this to a several level, and the contents could be found at #16. This is a work dedicated for the upcoming urgent need for such article.
Candidate for communications:
Criteria: Strong privacy control, does not expose personal data such as contact list, phone number, email address, ip address and is not exposed via metadata harvesting i.e. "friend request"
Supports all major platforms including Android/iOS/Mac/PC, must also be easy to setup and use securely.
Low on battery and resources, can be used on cheap and old devices