Kannel

Open Source WAP and SMS Gateway

14 Alternatives To Kannel

Handcent SMS

Handcent SMS is a free enhanced SMS and MMS application for Android.
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Jasmin SMS Gateway

Jasmin is a very complete open source SMS Gateway with many enterprise-class features such as:

KAPSYSTEM

KAP Computer Solutions Pvt. Ltd.,

MessageMedia

MessageMedia offers SMS software and solutions for businesses.

Nexmo

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

Spring Edge

Spring Edge offers voice, messaging and authentication API’s for business applications.
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Swift SMS Gateway

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

TargetEveryOne helps companies build customer relationships and increase sales.

TextMagic

TextMagic is a business text-messaging service for sending notifications, alerts, reminders, confirmations and SMS marketing campaigns.
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Twilio

Brings voice and messaging to your web and mobile applications.

UltraSMSScript

UltraSMSScript is a business text messaging & SMS marketing self-hosted software platform where you only pay a 1-TIME fee for the software and the WHOLESALE costs of texts. Start your own white label SaaS SMS Marketing business.

Wavecell

Wavecell simplifies real-time cloud communications using SMS, Chat Apps, Video Interaction and Voice solutions.

mjoy

mjoy is a free messaging application allowing its users to send unlimited text messages to any mobile number currently registered by any cellular service across the globe.