Salesmsg - Salesmsg is a simple tool that gives businesses an easy way to text their contacts online from local phone numbers.
Twilio - Brings voice and messaging to your web and mobile applications.
Group Texting - Group Texting provides your business with a robust Group texting software that supports up to 10-digits numbers.
Nexmo - Nexmo is a simple two way SMS API with global reach and wholesale rates
Fastsms - Fastsms helps you with marketing by providing business text messaging which you can use to send information regarding discounts and delivery details to customers.
BulkSMS - SMS messaging service provider offering two-way SMS communication services.