Windmill vs Dify vs Haystack vs Appian

Which one fits you in 2026? Traffic, pricing, input → output, tasks and community side by side.

Your tool
Windmill
vs
Competitor 1
Dify
Competitor 2
Haystack
Competitor 3
Appian
Compare
4 tools · best value per row highlighted
Your tool Windmill
windmill.dev
Windmill is an open-source, code-first orchestration platform for internal software.
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Competitor Dify
dify.ai
AI apps without code
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Competitor Haystack
haystack.deepset.ai
Haystack is an open-source AI orchestration framework from deepset for building production-grade LLM applications and agents.
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Competitor Appian
appian.com
Appian is an enterprise platform for process automation that orchestrates AI agents, existing systems and people from one place.
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Traffic estimated monthly website traffic
Monthly visits
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1Mvisits/mo
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MoM change
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▼ 16.6%
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6-month growth
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-30.6%
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Global rank web
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#39,510
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Avg. last 3 months
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1.1M
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Bounce rate lower is better
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41%
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Pages / visit
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4.4
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Visit duration
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6m 40s
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Traffic sources
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● Direct 84% · ● Referral 15%
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WindmillDifyHaystackAppian
0368.2K736.4K1.1M1.5MDify · 1.1MDify · 1.2MDify · 1.3MDify · 1.1MDify · 1.5MDify · 1.2MDify · 1.1MDify · 1.2MDify · 1.2MDify · 1M1M10MDify · 1.1MDify · 1.2MDify · 1.3MDify · 1.1MDify · 1.5MDify · 1.2MDify · 1.1MDify · 1.2MDify · 1.2MDify · 1MNov '25DecJan '26FebMarAprMayJunJulAug
Pricing
Model
Freemium
Freemium
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Starting price
$120per month · free tier available
$590per month · free tier available
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Free tier
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Free trial
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API access
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Plans
Free and Open-source (self-host) FreeEnterprise $120/mo
Sandbox FreeProfessional $590/yrTeam $1,590/yrEnterprise Custom
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Capabilities input → output
Input
Code
DocumentsText
CodeDocuments
DataDocumentsText
Output
Apps
Apps
Apps
Apps
Skill level
Advanced
Intermediate
Advanced
Advanced
Categories
Development & CodeProductivity & OfficeAI Developer ToolsAI Workflow+1 more
Chatbots & CompanionsDevelopment & CodeProductivity & OfficeAI Agent+4 more
Development & CodeProductivity & OfficeAI AgentAI Developer Tools
Development & CodeProductivity & OfficeAI AgentAI Workflow+1 more
Tasks what each tool can do · 2 shared · core   partial
Tasks covered
9
9
7
8
Agents
Agent creation
Workflows
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No-code
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Developer tools
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LLM development
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Process automation
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Self hosted
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RAG
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Business automation
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Chatbots
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APIs
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Agent memory
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Development
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Document data extraction
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Finance workflow automation
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Productivity
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Workflow deployment
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Community on aitoolstime
Rating
no ratings yet
no ratings yet
no ratings yet
no ratings yet
Upvotes
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▲ 1
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Saves
0
0
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Reviews
0
0
0
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Prompts
0
0
0
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Verified listing
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Traffic figures are third-party estimates for the tool's own domain; tools sharing a domain with a bigger product are not counted. Pricing is captured from each tool's site and may lag.