CallFire SMS Alternatives

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

SMPP SMSC simulator to test SMS messaging applications.

Open Source freemium

Preferred Patron is the top Customer Loyalty Software Program for businesses in any industry of any size.

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Our company offers virtual phone numbers, toll-free numbers, PBX, SMS numbers and numbers for a registration more than 100 countries. Buy Now!

paid $5.0 / Monthly

Tropo is a cloud API for voice and messaging.

SMSAPI.com is browser platform for bulk SMS and other SMS marketing solutions.

Karix is a messaging and communication provider which helps in connectivity. Karix solutions provides messaging platform to marketing, voting of services.

Skebby is a leading and best SMS messaging solution providing platform that allows you to send thousands of messages to your customers around the globe.

LINK Mobility is Europe's leading provider within mobile communications, specialising in mobile SMS messaging, digital services and multi-channel conversational communication.

Next generation cloud communication platform that allows for the easy building of voice, video, and messaging applications.

Zipwhip enables text messaging for landline, VoIP, and toll-free phone numbers.

Send and receive text messages globally with Twilio SMS.

Sinch is a powerful voice and messaging SDK that lets you bring your apps to life with VoIP and...

Reach 7 billion phones in seconds via SMS, Chat & Voice. Try it for free and improve your communication.