Botpress

Botpress is an open-source conversational AI platform that balances visual building with coding flexibility. The flow editor handles conversation design, while the code editor lets developers add custom logic, integrate APIs, and extend functionality. This hybrid approach works for both technical and non-technical team members. The platform includes NLU (natural language understanding) for intent recognition, entity extraction, and slot filling. Multi-channel deployment covers web, mobile, Slack, Teams, WhatsApp, and Telegram. The enterprise version adds analytics, version control, and role-based access. Being open-source means you can self-host for complete data control. The setup requires more technical expertise than cloud-only solutions. The UI feels less polished than commercial alternatives. Documentation can be sparse for advanced features. However, the flexibility and control make it excellent for organizations with specific requirements or privacy needs.