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Dify

Open-source platform for agentic workflows and RAG pipelines, cloud or self-hosted.

Dify, developed by LangGenius, is an open-source LLM app development platform combining a visual workflow canvas, RAG pipelines, agent capabilities, model management across hundreds of proprietary and open models, a prompt IDE and observability integrations (Opik, Langfuse, Arize Phoenix). It is offered as Dify Cloud or self-hosted via Docker Compose. The source is under a modified Apache 2.0 license that requires a commercial license for operating multi-tenant services, among other conditions. Its GitHub repository has around 160k stars.

Featured

The de-facto standard toolkit for building LLM applications and agents.

LangChain makes the LangChain framework and LangGraph, the low-level orchestration standard for stateful, controllable agents, plus the LangSmith platform for tracing, evaluating and monitoring them in production.

~$75M raised

4 pros · 4 cons
Featured

Conversational AI agents for customer experience.

Sierra, co-founded by Bret Taylor and Clay Bavor, builds production conversational agents that resolve real customer issues with guardrails, evaluation and human escalation — a template for deploying vertical agents at the enterprise edge.

~$10B valuation (Oct 2025)

4 pros · 4 cons

Multi-agent orchestration, from open-source framework to enterprise platform.

CrewAI popularized role-based multi-agent teams ('crews') with a simple mental model and ships an enterprise control plane for deploying, monitoring and governing them.

$18M Series A led by Craft Ventures (2024)

3 pros · 4 cons

Sources

  1. GitHub repository
  2. Dify license
  3. Dify website