OneRing.in

Reach Your Audience Instantly through the Missed call. widely used for lead generation, call-back service, voting and mobile verification by just a missed call.

7 Alternatives To OneRing.in

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8x8

8x8’s VoIP business phone systems deliver affordable, cloud-based voice, video, messaging, and call center solutions, helping you serve customers anytime, anywhere.

Asterisk

An open source telephony switching and private branch exchange service for Linux.

CallHippo

CallHippo offers cloud-based virtual phone systems for SME businesses.

CallRail

Call tracking, recording, and analytics.
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Exotel

Exotel is a powerful, feature-rich business phone system that offers features like Smart IVR for your business.

Nexmo

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