Messaging Software

• 
  KakaoTalkFree
• 
  Monal IMFree

  iOS and macOS XMPP Chat-Client.

• 
  HighSideFree to try

  The secure Slack/WhatsApp alternative for organizations handling regulated/sensitive data.

• 
  AdiumFree
• 
  GoldBugFree

  Secure E-Mail Client & Instant Messenger with Multi-Encryption.