Open Source Alternatives to Appsmith

A low-code application platform that allows users to build custom internal applications. It provides drag-and-drop UI widgets, connectivity to databases, SaaS tools, and REST/GraphQL APIs, and a centralized IDE for writing JavaScript logic. The platform supports self-hosting for secure data access and integrates with Git for version control and CI/CD workflows. It is designed for developers and businesses to automate manual processes, streamline customer support, and modernize legacy applications. Users can prompt widgets in natural language or write custom code in JS, HTML, and CSS for full control. The software is available as an open-source edition under the Apache 2.0 license or as a cloud-hosted service. It includes enterprise features such as SAML and OIDC SSO, role-based access controls, and SOC 2 Type II compliance.

Whether you want to cut software costs or escape vendor lock-in, these open source alternatives to Appsmith give you an option you fully own. You can self-host them, so your data stays on infrastructure you control. This page lists 1 open source alternative to Appsmith. The most popular is Budibase. It uses the GPL-3.0 license and ships an official Docker image.