Callmama - Get cheap international calling, international virtual number, Call Mama Gives an added advantage to send message and make calls to non-user of Callmama App.
3CX - Hosted PBX with CRM integration and mobile apps
CallHippo - Easy to use Phone System with World-Class Support
Microsoft Teams - Microsoft Teams provides the enterprise-level security, compliance and management features you expect from Office 365, including broad support for compliance standards, and eDiscovery and legal hold for channels, chats, and files.
Numero eSIM - Numero eSIM is a phone-number app that makes voice and data possible anywhere in the world, for free.
Amazon Connect - A self-service, cloud-based call center 📞