The best alternatives to Postman Collection for Messenger Platform are Messenger Platform (Beta), Chatfuel, and Dexter. If these 3 options don't work for you, we've listed a few more alternatives below.
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AssemblyAI— Speech-to-Text API with superhuman accuracy
Chatfuel is the leading bot platform for creating AI chatbots for Facebook. Learn how to create a Facebook Messenger bot quickly and easily - no coding required.
Build intelligent virtual assistants for your websites, facebook pages, and messaging apps. Attract your customers by automating your chat and providing real time assistant. Help your customers to generate qualified leads by asking contextual questions. You can reach faster to your prospects with messanger chatbot 10x more effectively
Knowledge Base web-widget that allows your clients to find the information they need in the most efficient manner. It has a powerful JS library that will show appropriate articles based on the user's current web page or situation (inactivity,.)
Chocotea is a library that generates a postman collection, environment and integration tests from java code. The aim of chocotea is to help reduce the time it takes to set up a postman collection with requests and tests manually.