How do these commonly used messenger apps stack up against each other? Use this handy chart to compare them.

Comparison Signal Wire Wickr Telegram Whatsapp iMessage Facebook
Refused to cooperate with
government agencies?
Transparency reports available?
Does not collect user data *
Default encryption *
Open source?
Encrypts metadata?
Does not log IP address
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*When using Wire, metadata -- the fact that you communicated with -- is not encrypted. Here are instructions on how to stay more anonymous when using Wire.