Langflow vs Semantic Kernel vs Windmill vs Haystack

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

Your tool
Langflow
vs
Competitor 1
Semantic Kernel
Competitor 2
Windmill
Competitor 3
Haystack
Compare
4 tools · best value per row highlighted
Your tool Langflow
langflow.org
Drag and drop AI
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Competitor Semantic Kernel
learn.microsoft.com
Semantic Kernel is a lightweight, open-source development kit from Microsoft for building AI agents and adding AI models to existing C#, Python or Java codebases.
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Competitor Windmill
windmill.dev
Windmill is an open-source, code-first orchestration platform for internal software.
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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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Traffic estimated monthly website traffic
Monthly visits
215.3Kvisits/mo
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MoM change
▼ 0.7%
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6-month growth
-4.9%
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Global rank web
#217,191
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Avg. last 3 months
225.2K
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Bounce rate lower is better
44%
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Pages / visit
2.2
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Visit duration
1m 04s
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Traffic sources
● Direct 76% · ● Referral 24%
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LangflowSemantic KernelWindmillHaystack
073.8K147.7K221.5K295.3KLangflow · 295.3KLangflow · 247KLangflow · 269.8KLangflow · 226.5KLangflow · 239.5KLangflow · 229.4KLangflow · 243.6KLangflow · 216.8KLangflow · 215.3K100K1MLangflow · 295.3KLangflow · 247KLangflow · 269.8KLangflow · 226.5KLangflow · 239.5KLangflow · 229.4KLangflow · 243.6KLangflow · 216.8KLangflow · 215.3KNov '25DecJan '26FebMarAprMayJunJul
Pricing
Model
Free
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Freemium
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Starting price
Free
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$120per 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
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Free and Open-source (self-host) FreeEnterprise $120/mo
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Capabilities input → output
Input
Text
CodeText
Code
CodeDocuments
Output
Apps
Apps
Apps
Apps
Skill level
Advanced
Advanced
Advanced
Advanced
Categories
Chatbots & CompanionsDevelopment & CodeProductivity & OfficeAI Agent+3 more
Development & CodeProductivity & OfficeAI AgentAI Developer Tools
Development & CodeProductivity & OfficeAI Developer ToolsAI Workflow+1 more
Development & CodeProductivity & OfficeAI AgentAI Developer Tools
Tasks what each tool can do · 1 shared · core   partial
Tasks covered
9
4
4
5
Developer tools
Agents
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Agent creation
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LLM development
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Workflows
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No-code
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Chatbots
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Development
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Self hosted
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APIs
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Agent memory
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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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Saves
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Reviews
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Prompts
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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.