Retool

Sure, Retool Retool is awesome.

But have you considered these open source alternatives?

They are free, self-hostable and community-driven.

Check by yourself: Budibase  Budibase , Appsmith  Appsmith , Tooljet  Tooljet , Ⓦ  Windmill .

  1. So is Budibase Budibase

    Create business apps and automate workflows in minutes

    ★ 23.6K Internal tool Low-code No-code License: GPL-3.0

    Budibase is an open-source low-code platform that saves engineers 100s of hours building forms, portals, and approval apps, securely.

    preview

  2. So is Appsmith Appsmith

    Internal tool builder

    ★ 35.9K Internal tool Low-code No-code License: Apache-2.0

    Organizations build internal applications such as dashboards, database GUIs, admin panels, approval apps, customer support dashboards, and more to help their teams perform day-to-day operations. Appsmith is an open-source tool that enables the rapid development of these internal apps.

  3. So is Tooljet Tooljet

    A low-code platform for building internal tools

    ★ 34.8K Internal tool Low-code No-code License: AGPL-3.0

    ToolJet is an open-source low-code framework to build and deploy internal tools with minimal engineering effort. ToolJet's drag-and-drop frontend builder allows you to create complex, responsive frontends within minutes. Additionally, you can integrate various data sources, including databases like PostgreSQL, MongoDB, and Elasticsearch; API endpoints with OpenAPI spec and OAuth2 support; SaaS tools such as Stripe, Slack, Google Sheets, Airtable, and Notion; as well as object storage services like S3, GCS, and Minio, to fetch and write data.

    Tooljet dashboard showing inventory and orders

  4. So is Ⓦ Windmill

    Developer platform to power your entire infra

    ★ 12.3K Low-code License: AGPL-3.0

    Open-source developer infrastructure for internal tools (APIs, background jobs, workflows and UIs). Autogenerated UIs and custom UIs to trigger workflows and scripts as internal apps.

    Scripts are turned into sharable UIs automatically, and can be composed together into flows or used into richer apps built with low-code. Supported script languages supported are: Python, TypeScript, Go, Bash, SQL, and GraphQL.

    preview