Flock vs Windmill
Side-by-side comparison of two AI agent tools
Short answer
- Windmill is growing faster: +316 GitHub stars in the last 30 days vs +4 for Flock.
- Pick Flock for: desktop multi-agent harness with visual workflows, built with Rust, Tauri, React, and langgraph-rust. Pick Windmill for: open-source developer platform to power your entire infra and turn scripts into webhooks, workflows and UIs.
From GitHub data refreshed daily.
Flockopen-source
Desktop multi-agent harness with visual workflows, built with Rust, Tauri, React, and langgraph-rust
Windmillopen-source
Open-source developer platform to power your entire infra and turn scripts into webhooks, workflows and UIs. Fastest workflow engine (13x vs Airflow). Open-source alternative to Retool and Temporal.
Metrics
| Flock | Windmill | |
|---|---|---|
| Stars | 1.1k | 18.1k |
| Star velocity /mo | 4.421052631578947 | 316.10526315789474 |
| Commits (90d) | 1 | 1.3k |
| Releases (6m) | 10 | 10 |
| Overall score | 0.36997803264978346 | 0.8093821444423039 |
Pros
- +Comprehensive low-code workflow builder with visual interface for creating complex AI applications without extensive programming
- +Strong multi-agent orchestration capabilities with dedicated agent nodes and MCP protocol support for tool integration
- +Modern architecture built on proven technologies (LangGraph, Langchain, FastAPI, NextJS) with active development and regular feature updates
- +Multi-language support with automatic UI generation from scripts in Python, TypeScript, Go, Bash, SQL, and more
- +High performance workflow engine claiming 13x faster execution than Airflow
- +Self-hostable open-source solution with AGPLv3 license providing full control and customization
Cons
- -Relatively new platform with limited documentation and community resources compared to established alternatives
- -Complexity may be overwhelming for simple chatbot use cases that don't require advanced workflow orchestration
- -Dependency on multiple underlying frameworks (LangGraph, Langchain) may introduce potential compatibility issues during updates
- -AGPLv3 license may restrict some commercial use cases and require careful compliance consideration
- -Being a comprehensive platform may introduce complexity for simple automation tasks
- -Self-hosting requires infrastructure management and maintenance overhead
Use Cases
- •Building enterprise chatbots with complex multi-step workflows, human approval processes, and integration with existing business systems
- •Implementing RAG systems that require orchestrated data retrieval, processing, and generation across multiple AI models and tools
- •Creating multi-agent teams for collaborative task execution, where different specialized agents handle specific parts of complex workflows
- •Building internal APIs and webhooks from existing scripts without additional infrastructure
- •Creating automated workflows for background jobs and data processing pipelines
- •Developing low-code internal applications with custom UIs for non-technical team members
FAQ
- Which is more popular, Flock or Windmill?
- Windmill has more GitHub stars (18,092 vs 1,114).
- Which is more actively developed, Flock or Windmill?
- Windmill had more commits in the last 90 days (1,264 vs 1).
- Should I use Flock or Windmill?
- Compare their capabilities, limitations and "best for" notes above. Both are open source, so trying each on a small task is the fastest way to decide.