Public - Group chats.
Wellcome - Wellcome helps create the safest and easiest office arrival experience for everyone—employees, visitors and contractors.
nocnoc - Instant group chat invite via link
KeyMe RFID - Instantly printed RFID keys from self-serve kiosks
Viber Communities - Group chat with up to 1B members, admin controls and more
Welkio - The best visitor sign-in software for your office