80K+ GitHub stars; most complete AI app builder; RAG + Agents + Workflow in one; 100+ LLM support; best debugging UX; Backend-as-a-Service approach; strongest community
Builder
4 full, 0 partial of 4
Visual Workflow Builder
Drag-and-drop canvas for designing AI workflows. Quality of node connections, debugging tools, and live preview capabilities.
Full
LLM Provider Support
Number of LLM providers supported (OpenAI, Anthropic, Google, Ollama, local models). Multi-model switching within workflows.
Full
Built-in RAG / Knowledge Base
Native document upload, vector store integration, chunking, and retrieval pipeline without code. Knowledge base management UI.
Full
Agent & Tool Use
Support for autonomous agents, tool calling, multi-agent orchestration, MCP protocol, and function routing within the visual builder.
Full
Orchestration
0 full, 3 partial of 3
App Integrations
Pre-built connectors to SaaS tools (Slack, Gmail, CRMs, databases). Breadth of non-AI integrations for end-to-end workflow automation.