CALLR Alternatives

Brings voice and messaging to your web and mobile applications.

Plivo's Voice API enables businesses to build Voice apps to reach customers globally in 200+ countries. Try Plivo's Voice API for free. Instant Sign Up.

Nexmo is a simple two way SMS API with global reach and wholesale rates

Clockwork is an Easy Text Message API. An SMS API for Developers. Build powerful apps and include SMS. Signup is free, Try it now.

Textlocal is an app that allows for individual and group texting. It is designed for businesses that have employers and employees who need to communicate with each other, making it easier to announce group meetings and special announcements.

Voximplant is a software program that allows businesses to automate communications by setting up automatic communication systems in the cloud.

Google Voice gives you one number for all your phones, voicemail organized in an email format, free...

Next-level customer service is just a text message away.

Chat API & In-App Messaging SDK for Mobile & Web Apps Innovate fast, save development cost and delight users with a scalable, secure and customizable Chat

SendBird is messaging-as-a-service.

SMS Gateway is your bridge between the Internet and the world of cell phone SMS text messaging.

Track your Wi-Fi hotspot usage. Zero configuration required. It just works.