What is Erupt used for?

Erupt is an annotation-driven Java framework that generates admin backends, with UI, RBAC, audit logs, and APIs, from annotated JPA entities without writing front-end code. It is a good fit for internal admin tools for Java teams and rapid back-office systems on Spring Boot.

Is Erupt open source?

Yes. Erupt is open source under the Apache-2.0 licence. Its source code is on GitHub at erupts/erupt and is written mainly in Java.

Yes. Erupt is open source, so the software itself is free to use.

Can I self-host Erupt?

Yes. Erupt can be self-hosted on your own server or infrastructure.

What is Erupt an alternative to?

Erupt is an open-source alternative to Retool and Forest Admin. Other open-source alternatives to Retool include Lowdefy, Motor Admin and DashPress.

Is Erupt actively maintained?

Yes. The most recent commit to Erupt was on 1 October 2026, and the latest release is 2.3.0, published on 25 September 2026. The project has 2.9k stars on GitHub.

Erupt: open-source alternative to Retool, Forest Admin

About Erupt

Erupt is a Java admin framework built on a code-as-configuration idea: annotate an entity class with @Erupt and a complete admin page is generated at runtime, with no controllers, front-end build, or scaffolding. It targets Java 17 and Spring Boot 3.x, starts in a few seconds, and is released under the Apache-2.0 license.

The framework ships more than 30 UI components, including date pickers, sliders, trees, code editors, reference tables, autocomplete, maps, signatures, and Markdown. Role-based access control, audit logs, Excel import and export, and OpenAPI support are built in, and every annotated entity becomes a permission-aware REST endpoint.

Newer releases add AI features: connections to more than 50 LLM providers, MCP-native tools, and skills for coding agents, positioned as an AI harness for admin apps. Documentation is available in English and Chinese, with a live demo. Erupt suits Java teams that want to ship internal tools and back-office systems quickly without maintaining a separate front end.

Key features

One annotated entity generates one admin page
No front-end code or build step
30+ built-in UI components
Role-based access control and audit logs
Excel import and export
REST endpoints with OpenAPI support
LLM provider and MCP integrations

Good fit for

→Internal admin tools for Java teams
→Rapid back-office systems on Spring Boot

Built with: Java
Tags: java; admin-panel; low-code; spring-boot; rbac; jpa; internal-tools; mcp

Erupt: questions and answers

What is Erupt used for?: Erupt is an annotation-driven Java framework that generates admin backends, with UI, RBAC, audit logs, and APIs, from annotated JPA entities without writing front-end code. It is a good fit for internal admin tools for Java teams and rapid back-office systems on Spring Boot.
Is Erupt open source?: Yes. Erupt is open source under the Apache-2.0 licence. Its source code is on GitHub at erupts/erupt and is written mainly in Java.
Is Erupt free?: Yes. Erupt is open source, so the software itself is free to use.
Can I self-host Erupt?: Yes. Erupt can be self-hosted on your own server or infrastructure.
What is Erupt an alternative to?: Erupt is an open-source alternative to Retool and Forest Admin. Other open-source alternatives to Retool include Lowdefy, Motor Admin and DashPress.
Is Erupt actively maintained?: Yes. The most recent commit to Erupt was on 1 October 2026, and the latest release is 2.3.0, published on 25 September 2026. The project has 2.9k stars on GitHub.