39.6k
Appsmith
Appsmith is a platform to build admin panels, internal tools, and dashboards. It seamlessly integrates with over 25 databases and any API.
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Development🛠️
Tools🔁
API💾
Database
5 Open Source Alternatives to Retool
Looking for an open-source alternative to Retool? Below are 5 community-built tools that offer similar functionality — all free, open source, and ready to use or self-host. Ranked by GitHub stars.
35.0k
ToolJet
A low-code platform for building business applications with a drag and drop builder, supporting integration with various databases, cloud storages, and APIs.
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Development🛠️
Tools🌐
Web🔁
API
23.6k
Budibase
Create business apps and automate workflows in minutes using a no code / low code platform. Supports PostgreSQL, MySQL, MariaDB, MSSQL, MongoDB, Rest API, Docker, K8s, and more.
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Development⚙️
DevOps🛍️
E-Commerce🛠️
Tools
16.2k
Windmill
Open-source developer platform to power your entire infra and turn scripts into webhooks, workflows, and UIs. Includes the fastest workflow engine, performing 13 times faster than Airflow. It serves as an open-source alternative to Retool and Temporal.
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Development⚙️
DevOps🔁
API🌐
Web
12.3k
ILLA Builder
Low-code platform for building business apps, enabling the quick creation of internal tools such as dashboards, CRUD apps, admin panels, CRM, and CMS. Supports integrations like PostgreSQL, MySQL, Supabase, GraphQL, MongoDB, MSSQL, REST API, Hugging Face, and Redis. Automate workflows with schedule or webhook. Open source alternative to Retool.
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Development🛠️
Tools🔁
API🏠
Self-Hosted
Frequently asked questions
What are the best open-source alternatives to Retool?
The top picks from this list are Appsmith, ToolJet, Budibase — all maintained, free to use, and self-hostable.
Are these alternatives to Retool free?
Yes. Every tool listed here is open source and free to use. Many can be self-hosted on your own infrastructure, which means no subscription fees and full control over your data.
Can I self-host an alternative to Retool?
Most of the alternatives listed are self-hostable. Check each tool's page for hosting details, system requirements, and licensing terms.
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