Dialogflow - Conversational UX Platform. (ex API.ai)
SkipFlag - AI knowledge base that builds itself from your communication
Telegram - Telegram is a messaging app with a focus on speed and security. It’s superfast, simple and free.
HelpSite - HelpSite is a simple service to help your setup the perfect support centre or help site.
Botpress - Open-source platform for developers to build high-quality digital assistants
HelpDocs - Educate your users with a super simple knowledge base that’s built for teams just like yours.