Apps like IMBox.me - Work messaging

Here are some great alternatives to IMBox.me - Work messaging by SPOTBROS TECHNOLOGIES S.L. :
BonChat
BonChat
★3.9
Telegram
Telegram
★4.2
Softros LAN Messenger
Softros LAN Messenger
★3.6
Threema Work. For Companies
Threema Work. For Companies
★3.6
Troop Messenger
Troop Messenger
★3.5
Team on the Run
Team on the Run
★4.3
illumy email + messaging
illumy email + messaging
★3.6
Messages - SMS, Text Message
Messages - SMS, Text Message
★4.1
EPRIVO Private Collaboration
EPRIVO Private Collaboration
★4.3
Nextcloud Talk
Nextcloud Talk
★4.0
Rocket.Chat Experimental
Rocket.Chat Experimental
★4.0
Brax.Me - Private Communities
Brax.Me - Private Communities
★4.5
EPRIVO Encrypted Email & Chat
EPRIVO Encrypted Email & Chat
★4.3
Secure Message: SMS, MMS
Secure Message: SMS, MMS
★4.7
Messages
Messages
★4.0
Workplace Chat from Meta
Workplace Chat from Meta
★4.4