ChatStack

Tiledesk is the full-stack open-source Live Chat with built-in Chatbots, written in Node.js and Angular.

HappyFox is a help desk ticketing system that is hosted on cloud, supporting multiple customer support channels like email, voice and live chat.

Schedule Engine is a customer support solution built for contractors.

Czater is an live chat solution with extended CRM and videochat features.

Chatwoot is a customer support tool for instant messaging channels.