Custom Component Integration Via Streamlit Component Api

via “custom react components via components v2 api with bidirectional communication”

Turn Python scripts into web apps — declarative API, data viz, chat components, free hosting.

Unique: BidiComponent pattern with Protocol Buffer serialization enabling real-time bidirectional communication between Python and React, allowing custom components to send and receive data without page reloads. Components v2 provides a TypeScript SDK that abstracts Protocol Buffer complexity.

vs others: More flexible than Components v1 because bidirectional communication enables interactive components; more powerful than st.* functions because developers have full React control; better than Dash custom components because WebSocket communication is built-in.

A faster way to build and share data apps

Unique: Provides a Component API that wraps React/HTML components with a Python interface, enabling bidirectional communication between custom frontend code and Python backend through a message protocol. Components are npm-packaged and registered dynamically.

vs others: More extensible than built-in widgets for custom visualizations, but requires JavaScript expertise and adds development complexity compared to pure Python solutions.