Alternatives Engine

windmill Alternatives

Compare open-source alternatives to windmill-labs/windmill by fit, deployment, maintenance, quality, and agent readiness.

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Decision Summary

windmill-labs/windmill has 12 alternative candidates. Top match is comet-ml/opik at 100/100 because Same llm eval intent with workflow overlap.

CandidatesExplicitCloudflare-readyAvg similarityTop candidate
123082comet-ml/opik
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Source Project

windmill-labs/windmill

Code-first platform for workflows, apps and AI agents, on the fastest self-hostable orchestrator (benchmarked against Airflow, Prefect and Temporal). Business teams build with AI, engineers control what ships. Open-source alternative to Lovable, Retool and n8n.

Rust NOASSERTION DockerKubernetesLibrary Only

Best For

Where windmill fits

evaluate LLM outputs
benchmark prompts and agents
track model quality

Not Best For

When to compare alternatives

edge-only Cloudflare Workers deployment without adaptation
users expecting a complete hosted product

Comparison Table

comet-ml/opik leads this comparison context

comet-ml/opik has the strongest combined agent score and maintenance profile in this comparison.

ProjectSimilarityStarsLanguageDeployQualityAgent
windmill-labs/windmillSource18,484RustDocker, Kubernetes5389
comet-ml/opik100/10023,298PythonDocker, Kubernetes6690
dataelement/bisheng100/10012,138PythonDocker, Local3580
lmnr-ai/lmnr99/1003,481TypeScriptDocker, Vercel3880
langfuse/langfuse78/10037,245TypeScriptDocker, Vercel8490
aduermael/wb78/10065SwiftLibrary Only, Local1254

Alternative Match

comet-ml/opik

100/100

Same llm eval intent with workflow overlap.

Fit: Strong replacement candidate with overlapping indexed use cases.

Debug, evaluate, and monitor your LLM applications, RAG systems, and agentic workflows with comprehensive tracing, automated evaluations, and production-ready dashboards.

ExplicitLlm EvalDockerKubernetesLlm Provider
Replacement risklow
Adoption noteSame category, so it can be evaluated as a direct functional substitute.
Adoption noteDeployment overlap: docker, kubernetes, library_only.
Quality66
Agent90

Alternative Match

dataelement/bisheng

100/100

Same llm eval intent with workflow overlap.

Fit: Strong replacement candidate with overlapping indexed use cases.

BISHENG is an open-source enterprise Agent platform for building, deploying, and managing AI applications. It combines AI agents, workflows, RAG and knowledge management, desktop agent integration, and vibecoding app hosting with unified model management, evaluation, observability, access control, and enterprise administration.

ExplicitLlm EvalDockerLocalLlm Provider
Replacement risklow
Adoption noteSame category, so it can be evaluated as a direct functional substitute.
Adoption noteDeployment overlap: docker, local, cloud.
Quality35
Agent80

Alternative Match

lmnr-ai/lmnr

99/100

Similar llm eval with docker/library_only deployment overlap.

Fit: Strong replacement candidate with overlapping indexed use cases.

Laminar - open-source observability platform purpose-built for AI agents. YC S24.

ExplicitLlm EvalDockerLibrary OnlyLlm Provider
Replacement risklow
Adoption noteSame category, so it can be evaluated as a direct functional substitute.
Adoption noteDeployment overlap: docker, library_only, local.
Quality38
Agent80

Alternative Match

langfuse/langfuse

78/100

Similar llm eval with docker/kubernetes deployment overlap.

Fit: Strong replacement candidate with overlapping indexed use cases.

🪢 Open source agent evals & observability: Trace, evaluate, and improve LLM applications with one open platform.

Llm EvalDockerKubernetesLlm Provider
Replacement risklow
Adoption noteSame category, so it can be evaluated as a direct functional substitute.
Adoption noteDeployment overlap: docker, kubernetes, library_only.
Quality84
Agent90

Alternative Match

aduermael/wb

78/100

Same llm eval intent with workflow overlap.

Fit: Strong replacement candidate with overlapping indexed use cases.

macOS 26+ browser CLI for agents: persistent sessions, compact JSON, screenshots, clicks/forms, JS eval, and live preview in under 2 MB.

Llm EvalLibrary OnlyLocalLlm Provider
Replacement risklow
Adoption noteSame category, so it can be evaluated as a direct functional substitute.
Adoption noteDeployment overlap: library_only, local, cloud.
Quality12
Agent54

Alternative Match

Purewhiter/mobilegym

78/100

Same llm eval intent with workflow overlap.

Fit: Strong replacement candidate with overlapping indexed use cases.

[EMNLP 2026] MobileGym: A Verifiable and Highly Parallel Simulation Platform for Mobile GUI Agent Research · 浏览器里运行的安卓模拟器 · Browser-hosted Android Simulator · Verifiable Evaluation · Scalable Online RL Training

Llm EvalLibrary OnlyLocalLlm Provider
Replacement risklow
Adoption noteSame category, so it can be evaluated as a direct functional substitute.
Adoption noteDeployment overlap: library_only, local, cloud.
Quality9
Agent60

Alternative Match

minghinmatthewlam/openbench

77/100

Same llm eval intent with coding_agent overlap.

Fit: Strong replacement candidate with overlapping indexed use cases.

Same model, different wrapper: a from-scratch benchmark comparing coding-agent harnesses (codex, pi, opencode, cursor, devin) and open models on correctness, speed, and token cost

Llm EvalDockerLibrary OnlyLlm Provider
Replacement risklow
Adoption noteSame category, so it can be evaluated as a direct functional substitute.
Adoption noteDeployment overlap: docker, library_only, local.
Quality7
Agent56

Alternative Match

langwatch/langwatch

75/100

Same llm eval intent with coding_agent overlap.

Fit: Strong replacement candidate with overlapping indexed use cases.

Open-Source Agent Observability & Evals for AI Platform teams. Trace, test, route and govern every agent & coding assistant in the company.

Llm EvalDockerLocalLlm Provider
Replacement risklow
Adoption noteSame category, so it can be evaluated as a direct functional substitute.
Adoption noteDeployment overlap: docker, local.
Quality39
Agent80

Alternative Match

GoogleCloudPlatform/evalbench

75/100

Same llm eval intent with workflow overlap.

Fit: Strong replacement candidate with overlapping indexed use cases.

EvalBench is a flexible framework designed to measure the quality of generative AI (GenAI) workflows around database specific tasks.

Llm EvalDockerLocalLlm Provider
Replacement risklow
Adoption noteSame category, so it can be evaluated as a direct functional substitute.
Adoption noteDeployment overlap: docker, local, cloud.
Quality36
Agent71

Alternative Match

GoogleCloudPlatform/ml-auto-solutions

74/100

Same llm eval intent with workflow overlap.

Fit: Strong replacement candidate with overlapping indexed use cases.

A simplified and automated orchestration workflow to perform ML end-to-end (E2E) model tests and benchmarking on Cloud VMs across different frameworks.

Llm EvalLocalCloudLlm Provider
Replacement risklow
Adoption noteSame category, so it can be evaluated as a direct functional substitute.
Adoption noteDeployment overlap: local, cloud.
Quality22
Agent65

Alternative Match

callstackincubator/evals

73/100

Same llm eval intent with coding_agent overlap.

Fit: Strong replacement candidate with overlapping indexed use cases.

A benchmark suite for evaluating how coding models solve real React Native tasks.

Llm EvalDockerLocalLlm Provider
Replacement risklow
Adoption noteSame category, so it can be evaluated as a direct functional substitute.
Adoption noteDeployment overlap: docker, local, cloud.
Quality7
Agent55

Alternative Match

zapier/AutomationBench

73/100

Same llm eval intent with workflow overlap.

Fit: Strong replacement candidate with overlapping indexed use cases.

A benchmark for evaluating AI agents on realistic business workflows

Llm EvalLocalCloudLlm Provider
Replacement risklow
Adoption noteSame category, so it can be evaluated as a direct functional substitute.
Adoption noteDeployment overlap: local, cloud.
Quality6
Agent52

Data Source

d1 / d1_query

1226 loaded projects. Generated at 2026-11-11T02:17:47.574Z.