Open-source platform for developing LLM apps with visual workflow builder and first-class RAG support. ~58K GitHub stars. Self-hostable. Plugin ecosystem + MCP support.
Drag-and-drop UI on top of LangChain and LlamaIndex. Visual builder for LLM flows, RAG pipelines, and agents. 55K+ GitHub stars. Note: Acquired by Workday Aug 2025.
Open-source low-code workbench for LangChain. Visual graph canvas for chains, agents, and RAG. ~42K GitHub stars.
Conversational AI platform with 1M+ bots deployed. 2025 LLM integration added agent capabilities. Visual flow builder + optional code customization.
No-code platform for orchestrating multiple AI agents with visual workflows. Simple prompt-to-structure approach. Free tier available.
Natural-language AI agent builder. Define agent behavior through written instructions, no code required. Combines no-code with AI-first UX.
Visual canvas for AI agents with built-in premium LLM access. Pre-built templates for data analysis, CRM, support, meeting prep. Includes AI debugging assistant (Gummie).
No-code platform for creating AI agents with native integrations. Lighter weight than n8n — faster AI workflow setup. Good for personal productivity and small business.
Visual builder for AI agents and chatbots. Supports LLMs, vector stores, tool use, and memory. Frame-like UX for designing agent behavior. Free to start.