Apps like Copiosus

Here are some great alternatives to Copiosus by verbosus.com :
Seecrypt Enterprise
Seecrypt Enterprise
★3.8
SimpleX Chat
SimpleX Chat
★4.3
Letstalk IM
Letstalk IM
★3.8
Speek! - Secure Messenger
Speek! - Secure Messenger
★4.2
BudChat
BudChat
★4.3
SOCIETY: Secure Social Network
SOCIETY: Secure Social Network
★3.8
CrazyChat - Online Chat Rooms!
CrazyChat - Online Chat Rooms!
★3.3
Confide - secure messenger
Confide - secure messenger
★4.3
Glacier Chat: Secure Messenger
Glacier Chat: Secure Messenger
★4.3
StealthTalk: Private Messenger
StealthTalk: Private Messenger
★4.1
Threema Work. For Companies
Threema Work. For Companies
★3.5
Voxer Walkie Talkie Messenger
Voxer Walkie Talkie Messenger
★3.4
Element - Secure Messenger
Element - Secure Messenger
★3.3
Chat-in Instant Messenger
Chat-in Instant Messenger
★4.0
Messages: Private messaging
Messages: Private messaging
★4.5
Syphon
Syphon
★3.7