Langflow

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 Repository  146,168  8,649

Low-code visual builder for agentic and RAG applications with built-in API and MCP server

low-code visual-builder rag mcp multi-agent
Platform Self-Hosted Stable Maintained

Key Features

Multi-Agent
Single Agent
Human-in-the-Loop
Streaming
Async Support
Type Safe
Short-Term Memory
Long-Term Memory
Shared Memory
Plugin System
Custom Tools
MCP Protocol
A2A Protocol
Code Execution
Web Browsing
File System Access
Sandboxing
Guardrails
Structured Output
DAG Workflows
Visual Builder
CLI
API Server
Self-Hosted
Cloud Hosted

Community Feedback

Strengths

  • Largest community in category (146k stars)
  • Powerful visual editor
  • Multi-agent support (ALTK, CUGA)
  • Dual MCP client and server
  • Active development

Weaknesses

  • DataStax hosted deprecated March 2026, shutting April 2026
  • IBM acquisition creates uncertainty
  • Complex flows hard to debug

Langflow Details

OrganizationLangflow (DataStax / IBM)
Organization TypeCompany
CategoryPlatform
SubcategoryLow code
DeploymentSelf-Hosted
Primary LanguagePython
RuntimePython 3.10+
LicenseMIT
Commercial UseUnrestricted
Install Commandpip install langflow
GitHub Stars146,168
GitHub Forks8,649
Release CadenceBiweekly
MaturityStable
Pricing ModelFree
Free TierFully free and open-source (MIT)
Self-Hosted FreeYes
Cost Modelfree + LLM costs
Community SizeMassive (146k stars)
Community ActivityVery active
SentimentPositive
GPU RequiredNo
ConfidenceHigh
Research Date2026-03-24
LLM ProvidersOpenAI, Anthropic, Google, Ollama, Azure, AWS, local models
API Keys RequiredLLM provider API key

Use Cases

Similar Tools

FlowiseLangflow larger community/more features, Flowise simpler
DifyLangflow visual-flow-first, Dify platform-first

When to Use

Best for: Visual AI workflow development with MCP server capabilities

Avoid when: Need stable managed cloud hosting — DataStax hosted shutting down

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Release v20260324