Apps like SL2™

Here are some great alternatives to SL2™ by CellTrust Corporation :
Cellcrypt Enterprise
Cellcrypt Enterprise
★3.5
Silent Phone - Secure Calling
Silent Phone - Secure Calling
★3.8
SMART Comms
SMART Comms
★4.6
Unity-Mobile
Unity-Mobile
★3.6
Vocera Vina
Vocera Vina
★4.2
Cloudli Phone App
Cloudli Phone App
★3.8
101VOICE Mobile SoftPhone
101VOICE Mobile SoftPhone
★4.6
Mobile Security for Business
Mobile Security for Business
★4.4
SaltIM
SaltIM
★4.5
AgniTalk
AgniTalk
★3.6
StealthTalk: Private Messenger
StealthTalk: Private Messenger
★4.1
Secure messenger SafeUM
Secure messenger SafeUM
★3.5
Threema Work. For Companies
Threema Work. For Companies
★3.5
Chatwork - Business Chat App
Chatwork - Business Chat App
★3.4
Team on the Run
Team on the Run
★4.2
MobileTrust for Android
MobileTrust for Android
★3.8