Based on our record, MessageBird seems to be more popular. It has been mentiond 1 time since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
We built a subscription management chatbot, using Twilio for sending SMS, but it lacked a dashboard to view conversations. I've recently come across https://messagebird.com/en/ - they have a pre-built dashboard that allows your team to respond to messages, as well as a nifty flow builder. Source: almost 3 years ago
Twilio - Brings voice and messaging to your web and mobile applications.
Tropo - Tropo is a cloud API for voice and messaging.
Plivo - Plivo simplifies your customer engagement.
Melrose Labs SMSC Simulator - SMPP SMSC simulator to test SMS messaging applications.
Nexmo - Nexmo is a simple two way SMS API with global reach and wholesale rates
Skebby - 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.