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17 Best Open Source Retool Alternatives

A curated collection of the 17 best open source and self-hosted alternatives to Retool in 2026.

Looking for a free, privacy-friendly, or self-hosted replacement for Retool in 2026? The top open-source alternative is Dify — Visual platform for building agentic workflows, RAG pipelines, and LLM-powered apps. Supports hundreds of models, MCP integration, and self-hosted deployment..

Other highly rated open-source Retool alternatives include NocoDB, Appwrite and ToolJet.

★ 153,656

Visual platform for building agentic workflows, RAG pipelines, and LLM-powered apps. Supports hundreds of models, MCP integration, and self-hosted deployment.

Dify preview

Visual platform for building agentic workflows, RAG pipelines, and LLM-powered apps. Supports hundreds of models, MCP integration, and self-hosted deployment.

★ 64,752

Convert any database into a no-code platform with spreadsheet interface. Connect PostgreSQL/MySQL or use hosted database. Scale to millions of rows effortlessly.

NocoDB preview

Convert any database into a no-code platform with spreadsheet interface. Connect PostgreSQL/MySQL or use hosted database. Scale to millions of rows effortlessly.

★ 57,136

Open-source development platform with built-in backend infrastructure, web hosting, and security features. Scale applications using your preferred programming languages.

Appwrite preview

Open-source development platform with built-in backend infrastructure, web hosting, and security features. Scale applications using your preferred programming languages.

★ 40,777

Open-source low-code platform for creating custom internal tools, dashboards, and admin panels with a drag-and-drop interface

ToolJet preview

Open-source low-code platform for creating custom internal tools, dashboards, and admin panels with a drag-and-drop interface

★ 40,755

Low-code platform for creating powerful internal tools and dashboards with drag-and-drop ease, robust integrations, and customizable workflows.

AppSmith preview

Low-code platform for creating powerful internal tools and dashboards with drag-and-drop ease, robust integrations, and customizable workflows.

★ 35,586

A React-based framework for rapid development of internal tools, admin panels, and dashboards with powerful data handling capabilities.

Refine preview

A React-based framework for rapid development of internal tools, admin panels, and dashboards with powerful data handling capabilities.

★ 27,933

YAML-based orchestration platform with 1400+ plugins for running data pipelines, AI workflows, and infrastructure automation across teams at scale.

Kestra preview

YAML-based orchestration platform with 1400+ plugins for running data pipelines, AI workflows, and infrastructure automation across teams at scale.

★ 28,244

Low-code platform for creating custom business applications quickly. Design, automate, and deploy with ease.

Budibase preview

Low-code platform for creating custom business applications quickly. Design, automate, and deploy with ease.

★ 23,888

Open-source no-code platform for creating tailored business applications quickly, with full customization and easy deployment options.

NocoBase preview

Open-source no-code platform for creating tailored business applications quickly, with full customization and easy deployment options.

★ 17,693

Powerful, self-hosted platform for building and running workflows, scripts, and apps with code-first approach and collaborative features.

Windmill preview

Powerful, self-hosted platform for building and running workflows, scripts, and apps with code-first approach and collaborative features.

★ 7,797

Durable orchestration platform for managing AI agents, scheduling background tasks, and running mission-critical workflows.

Hatchet preview

Durable orchestration platform for managing AI agents, scheduling background tasks, and running mission-critical workflows.

★ 6,884

Create data-driven websites and reports using SQL and Markdown, with automatic visualizations and interactive elements.

Evidence preview

Create data-driven websites and reports using SQL and Markdown, with automatic visualizations and interactive elements.

★ 5,107

A self-hosted tool that provides an intuitive, spreadsheet-style interface for viewing, editing, and querying PostgreSQL databases without technical expertise.

Mathesar preview

A self-hosted tool that provides an intuitive, spreadsheet-style interface for viewing, editing, and querying PostgreSQL databases without technical expertise.

★ 6,833

A low-code platform for creating robust backends, complete with a spreadsheet UI for easy data management and custom functions.

Rowy preview

A low-code platform for creating robust backends, complete with a spreadsheet UI for easy data management and custom functions.

★ 1,686

A modular CRM/ERP framework built on Next.js and TypeScript that encodes hundreds of architectural decisions so dev teams can ship production features in days, not months.

Open Mercato preview

A modular CRM/ERP framework built on Next.js and TypeScript that encodes hundreds of architectural decisions so dev teams can ship production features in days, not months.

★ 2,975

Build and manage custom databases with ease, create type-safe APIs, and develop applications quickly

undb preview

Build and manage custom databases with ease, create type-safe APIs, and develop applications quickly

★ 15,576

Visual database and workflow automation tool with AI-powered features and 6,000+ app integrations

AITable preview

AITable.ai is a visual database and workflow automation platform that simplifies data organization and task automation for personal and enterprise use. It combines spreadsheet-like interfaces with database functionality, AI-powered analytics, and seamless integrations with over 6,000 apps via Zapier, Make, Pabbly, Activepieces, and Albato. - Visual Database Interface: Hybrid spreadsheet-database UI for intuitive data management - 6,000+ App Integrations: Connect with tools via Zapier, Make, Pabbly, Activepieces, and Albato - AI-Powered Analytics: Business Intelligence Copilot for data analysis and visualization - Automated Forms: One-click form creation with customizable pre-filled content for lead tracking - Workflow Automation: Code-free automation for repetitive tasks (Slack messages, emails, etc.) - AI Writing Assistant: Generate high-quality content for emails, ads, blogs, and more - Multi-View Workspaces: Organize work in lists, boards, tables, calendars, or mind maps - AI Customer Service Agent: Build custom ChatGPT-powered chatbots for support and sales AITable.ai is a cloud-based SaaS platform with no self-hosting option currently available. It offers API access for custom integrations and provides enterprise-grade security features.

About Retool

A quick way to build internal tools with drag-and-drop components and connecting them to databases and APIs to create complex workflows.