Windmill alternatives

4 tools to consider instead of Windmill, shown against it.

Windmill Retool Appsmith Budibase ToolJet
Vendor Windmill Labs Retool, Inc. Appsmith Budibase ToolJet, Inc.
Pricing model Free tier + paid plans Free tier + paid plans Free tier + paid plans Free tier + paid plans Free tier + paid plans
Free tier Yes Yes Yes Yes Yes
Deployment Cloud, Self-hosted Cloud, Self-hosted Cloud, Self-hosted Cloud, Self-hosted Cloud, Self-hosted
Open source Yes (AGPL-3.0 (Community Edition, without enterprise features)) No Yes (Apache-2.0) Yes (GPL-3.0 (core); BSL for paid enterprise features) Yes (AGPL-3.0)
Best for Engineering teams wanting a code-first, self-hostable alternative to Retool plus a workflow/orchestration engine. Engineering teams building internal CRUD tools and ops dashboards on top of a warehouse or operational database. Teams wanting a free, self-hostable app builder for internal tools without per-user licensing at small scale. Teams wanting a free, self-hostable low-code builder for internal apps and automations on existing data sources. Teams wanting an open-source, AGPL-licensed internal tool builder with AI-assisted and agent-driven app generation.
Pricing

Free, unlimited-execution open-source self-hosted edition; Enterprise adds per-developer seats, per-worker compute and SSO, from a monthly minimum.

Free / Open-source $0/month
Enterprise from $120/month

Prices read from the vendor's own page on September 21, 2026. Vendors change prices; check the source before you budget.

Per-builder plus per-internal-user pricing across Free, Team, Business and Enterprise tiers, on cloud or self-hosted.

Free $0
Team $10/builder/month (annual) + $5/internal user/month
Business $50/builder/month (annual) + $15/internal user/month
Enterprise custom

Prices read from the vendor's own page on September 21, 2026. Vendors change prices; check the source before you budget.

Free open-source Community edition (self-hosted, unlimited use); cloud Free tier for up to 5 users; paid per-user Business and custom Enterprise tiers.

Free (cloud) $0
Business $15/user/month
Enterprise from $2,500/month

Prices read from the vendor's own page on September 21, 2026. Vendors change prices; check the source before you budget.

Free self-hosted Open Source edition; cloud Pro/Premium/Business plans priced on actions, AI credits and creator seats, plus custom Enterprise.

Pro (cloud) $19/month
Premium (cloud) $49/month
Business (cloud) $299/month
Enterprise custom

Prices read from the vendor's own page on September 21, 2026. Vendors change prices; check the source before you budget.

Free tier for small teams; per-builder monthly pricing on Basic/Pro/Team tiers; Enterprise starts at a flat monthly minimum.

Free $0/builder/month
Basic $23/builder/month
Team $199/builder/month
Enterprise from $3,000/month

Prices read from the vendor's own page on September 21, 2026. Vendors change prices; check the source before you budget.

Features
  • Turns Python/TypeScript/Go/Bash/SQL scripts into APIs and workflows
  • Visual workflow/flow editor alongside code-first scripts
  • Auto-generated UIs and internal apps from scripts
  • Free, unlimited-execution open-source self-hosting
  • Distributed worker architecture for scaling execution
  • Scheduling, webhooks and event triggers
  • Audit logs and SAML/SCIM (Enterprise)
  • Drag-and-drop UI builder with 100+ prebuilt components
  • Direct connections to SQL/NoSQL databases and REST/GraphQL APIs
  • JavaScript and Python scripting inside the builder
  • Retool Workflows for backend automation
  • Role-based access control and audit logging
  • Self-hosted or cloud deployment
  • Mobile app builder
  • Drag-and-drop UI builder with 45+ widgets
  • Connects to 25+ databases and any REST/GraphQL API
  • JavaScript throughout queries and components
  • Git-based version control per app
  • Role-based access control
  • Free, unlimited self-hosted Community edition
  • Reusable packages and workflows (paid tiers)
  • Drag-and-drop UI builder for forms, tables and dashboards
  • Built-in automations/workflow engine
  • Free, unlimited self-hosted Open Source edition
  • Connects to SQL, NoSQL, REST APIs and SaaS tools
  • Row-level and column-level access control
  • AI agents and AI-assisted app generation
  • Docker/Kubernetes self-hosting
  • Drag-and-drop UI builder with 45+ components
  • AI app generation from a natural-language prompt
  • MCP integration for building apps from Claude Code, Codex or Cursor
  • Connects to databases, cloud storage, GraphQL and REST APIs
  • Git-based version control and audit logs
  • Self-hosted, air-gapped deployment option
  • Role-based access control and SSO (paid tiers)

In the index now