Langflow

LangflowSince 2023-02

Langflow is a low-code visual interface for designing and deploying AI agent chains and RAG pipelines. Users drag and drop components representing LLMs, data sources, and tools to create complex agent architectures. It integrates natively with LangChain and supports deployment as APIs or standalone applications.

Developed by Langflow AI as an open-source companion to LangChain. The visual approach makes agent architecture accessible to non-engineers while remaining powerful for developers.

AgnoSince 2025-10

Agno (formerly Phidata) is a lightweight, ultra-fast Python framework engineered for building production-grade autonomous multi-agent systems with native memory, knowledge retrieval, and multimodal reasoning capabilities. It is designed to replace bloated agent frameworks with a pure, pythonic developer experience. Agno agents operate up to 10x faster than legacy orchestration libraries by eliminating unnecessary abstractions. With built-in support for vector databases (PgVector, Qdrant, Pinecone), structured output schemas, and agent-to-agent delegating protocols, developers can build complex autonomous assistants with under 20 lines of clean code.

The framework includes first-class multimodal tools allowing agents to analyze images, process video streams, execute code in secure sandboxes, and query SQL databases. Agno agents natively persist session state and user memory in PostgreSQL, making stateful conversations effortless across web sessions. Agno is fully open-source with extensive documentation, offering enterprise-ready middleware for authentication, telemetry, and rate limiting.