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Retool vs Windmill

Side-by-side comparison of features, pricing, ratings, and alternatives.

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Retool
RetoolBuild internal tools fast with a drag‑and‑drop UI and prebuilt data connectors.
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Windmill
WindmillTurn code into workflows, internal tools, and APIs instantly
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Overview
Description

Retool is a low‑code platform that enables engineers, product managers, and analysts to create custom internal applications using a visual drag‑and‑drop interface. It provides a library of ready‑made UI components and lets you write JavaScript for advanced logic. The platform connects to databases, APIs, and SaaS services, supports role‑based access control, and can be run as a cloud service or self‑hosted for enterprise security. Teams use it to replace spreadsheets, legacy admin panels, and manual workflows with scalable web apps.

Windmill is an open‑source developer platform that lets you convert Python, TypeScript, Go and SQL scripts into production‑ready workflows, internal tools, and APIs. It provides a low‑code environment where developers can orchestrate, schedule, and expose code without writing boilerplate. The platform supports self‑hosted deployments as well as a managed cloud offering, enabling teams to iterate quickly, share components, and scale automation across the organization while keeping full control over data and infrastructure.

Pricing
Freemium
Freemium
Category
Low-Code / No-Code
Low-Code / No-Code
Best for
Engineering and product teams building internal apps
Developers and internal tool teams
Specifications
open source
No
Yes
api available
Yes
Yes
support options
Email, Live Chat, Documentation
Email, Community Slack, GitHub Issues
key integrations
PostgreSQL, MySQL, MongoDB, Stripe, Salesforce, Slack
GitHub, GitLab, Slack, PostgreSQL, MySQL, Kafka
Pros & Cons
Pros
  • Rapid development of internal apps without extensive front‑end work.
  • Extensive library of prebuilt integrations saves time.
  • Highly customizable with JavaScript for complex logic.
  • Supports both SaaS and self‑hosted deployments.
  • Open‑source with full code transparency
  • Supports multiple programming languages
  • Fast conversion of scripts to APIs and UI
  • Flexible deployment: self‑hosted or SaaS
Cons
  • Learning curve for non‑technical users unfamiliar with JavaScript.
  • Advanced features require paid subscription tiers.
  • Self‑hosted setup can be complex for smaller teams.
  • UI is functional but not as polished as dedicated low‑code platforms
  • Advanced orchestration may require learning its workflow DSL
  • Managed SaaS pricing can be higher for large teams
Community & Metrics
Upvotes
0
0
User rating
Not enough data
Not enough data

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The Verdict

AI-generated from listing data

Windmill offers open‑source, multi‑language script‑to‑API/workflow automation with flexible deployment, while Retool provides a richer drag‑and‑drop UI and broader pre‑built data connectors.

Key differences

  • •Windmill is open‑source and lets you run code in Python, TypeScript, Go, SQL; Retool is closed‑source.
  • •Retool focuses on visual UI building with a component library; Windmill’s UI is functional and code‑centric.
  • •Retool ships >50 pre‑built data connectors; Windmill lists only a few core integrations (GitHub, GitLab, Slack, PostgreSQL, MySQL, Kafka).
  • •Windmill includes built‑in role‑based access control and audit logs; Retool also has RBAC but details not specified beyond UI permissions.
  • •Support channels differ: Windmill relies on community Slack and GitHub Issues; Retool offers email, live chat, and documentation.
DimensionWinner

Pricing & value

Both have freemium models; no cost details provided for paid tiers, so value cannot be compared.

Tie

Ease of use / learning curve

Retool’s drag‑and‑drop UI is designed for rapid app building; Windmill requires learning its workflow DSL.

Retool

Features & depth

Windmill supports multiple programming languages, API publishing, internal admin panels, and extensible plugins; Retool centers on UI components.

Windmill

Integrations & ecosystem

Retool lists >50 data sources including Stripe and Salesforce; Windmill lists only a handful of core services.

Retool

Collaboration

Retool mentions real‑time collaboration and version control; Windmill only notes Git integration without collaborative UI features.

Retool

Scalability

Windmill can be self‑hosted on any infrastructure or used as SaaS, giving more deployment flexibility.

Windmill

Support

Retool provides email, live chat, and documentation; Windmill relies on community Slack and GitHub Issues.

Retool

Security & privacy

Windmill explicitly mentions role‑based access control, audit logs, and self‑hosted deployment for data control.

Windmill

Choose Retool if…

Teams prioritizing fast UI building, many pre‑built connectors, and collaborative low‑code development.

Choose Windmill if…

Teams needing open‑source, multi‑language automation, self‑hosted control, and API generation.

Common questions

Can I self‑host both platforms?

Yes. Windmill offers self‑hosted or SaaS; Retool also provides a self‑hosted option behind your firewall.

Which tool supports more programming languages for custom logic?

Windmill supports Python, TypeScript, Go, and SQL scripts; Retool only allows JavaScript for custom logic.

Is there a lock‑in risk if I start with one and later switch?

Windmill is open‑source, so you can export code; Retool is closed‑source, making migration more effort.