Neither Keybase nor Signal Messenger offers a free trial.
Keybase is designed for Large Enterprises, Medium Business and Small Business.
Signal Messenger is designed for Large Enterprises, Medium Business and Small Business.
Pricing details for both Keybase and Signal Messenger are unavailable at this time. Contact the respective providers for more information.
Some top alternatives to Keybase includes Encrypt.me, 1Password, SendSafely, VoltShare, Element, Crypho, Confide, Signal Messenger, CypherChat and SmartEncrypt.
Some top alternatives to Signal Messenger includes Output Messenger, Trillian, Dialog, Confide, Virola Messenger, Takle, Threema Work, CypherChat and Messenger Communication Platform.