Chatfuel is great for a small team looking to easily implement and set up Facebook chatbots for their clients for ease of community management, etc. Chatfuel is not necessarily meant for large scale operations that require complex workflows and chatbot requirements, it is limited to Facebook Messenger and is not 100% intuitive in this regard.
Tidio is well suited for businesses who want to chat with their site visitors in real time. The interface is simple and intuitive, and the user experience on the visitor side is great as well. Perfect for installing on a marketing site, proprietary portal, and more. Can set up an after hours bot to help triage requests from clients and prospective clients when you are back in office.
Both offer bot service to reply to messages from Facebook. The difference is that Chatfuel gives you the option of being able to create conversion funnels or fixed conversation changes.
Connecting to our API is free from Chatfuel and integration with other providers has an additional cost.
AIVO has no option to create conversation flows if not through keywords.