csml-engine

Why we included this project

CSML is a programming language designed specifically for writing chatbot conversations. Instead of wiring together generic code and state machines, you write flows in a plain-text syntax that reads like a script, and the engine handles the memory slots, UI components, and API calls for you. It runs on a standard MongoDB, PostgreSQL, or SQLite database and ships as a Docker image, so it's a practical choice for teams that want a self-hosted alternative to proprietary bot platforms. The syntax is expressive enough for complex multi-step dialogues, and the runtime lets you inject arbitrary code or call any third-party service when you need to go beyond the built-in components.