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Added on September 8th, 2011

Free SMS API (sendsms.pk)

Free SMS API (sendsms.pk)
This API provides a simple and easy interface (with php sdk) with which you can send and receive sms in your own websites, web applications and desktop applications. You can retrieve sms in your inbox and outbox with the help of this API and you can also send sms with it.
More information: http://www.sendsms.pk/send-sms-from-your-website.php