bytedance/flowgram.ai
An extensible TypeScript framework with visual canvas and node-based UI for building AI workflow platforms, with built-in LLM and other AI nodes.

FlowGram is a composable visual workflow development framework and toolkit from ByteDance. It provides a flow canvas, node configuration forms, variable scope chains, and ready-to-use materials including LLM nodes, Condition nodes, and Code Editor nodes. Developers can use these components to construct AI workflow platforms without building infrastructure from scratch. The framework is React-based and designed to be extensible for custom node types and integrations.