Chatkit vs Twilio API for WhatsApp: What are the differences?
Developers describe Chatkit as "Add 1-1 and group chat to your app with typing indicators, file attachments, user online presence and more". Chatkit is designed to make it as simple as possible to add chat to your app. It lets you add 1-1 and group chat to your app, along with typing indicators, file attachments and storage, user online presence and a flexible permissions system. On the other hand, Twilio API for WhatsApp is detailed as "Reach users on the world’s most popular messaging app through one streamlined API, officially supported by WhatsApp". The Twilio API for WhatsApp provides developers all over the world with a simple, reliable, and officially supported way to use the WhatsApp Business API. They can now easily build messaging experiences that combine the ease of use of the Programmable SMS API with the global reach of WhatsApp.
Chatkit and Twilio API for WhatsApp can be categorized as "Communications SDK" tools.