Quick answer
REBUILD is a free, open source project in the “Low-Code Platforms” group, built with Java. It is released under GPL-3.0, has 1,080 GitHub stars, and its repository was last updated in Oct 2026. You can self-host it on your own server. Verified 14 October 2026.
Low-Code Platforms
REBUILD
Configurable zero-code business platform with CRM scenarios and an AI builder.
GitHub stars
1,080
Last repo update
Oct 2026
License
GPL-3.0
Technology
Java
What is REBUILD?
REBUILD lets you design entities, forms, approval flows and dashboards visually. It runs on Java and supports Docker and on-premise installs; documentation is mainly in Chinese.
Highlights
- Visual entity and form designer
- Approval flows and automation
- Mobile access
- Docker or on-premise install
Best for
Teams that want to model their own CRM without coding.
Check before you commit
Documentation is mainly in Chinese.
Self-Hosted (Open Source Edition)
Install on your own server • No per-user software fee • Full control & privacy
Self-Host on My Server →Official Website & Docs
We did not find an official hosted plan in the project documentation. Read the docs before deciding.
Open the docs →🏠 Self-Hosted Version
You download the source code and run it on your own server or VPS (for example Hostinger, AWS or DigitalOcean).
Installation
Docker command from the official README (written in Chinese). Then open http://localhost:18080/. For production the README recommends using MySQL.
Open the official install guide →
Requirements: Java. It ships with a built-in H2 database for trying it. MySQL 5.6+ is optional but recommended for production.
Commands above come from the project's own documentation (checked 14 October 2026). Versions change, so confirm against the official guide before running anything on a production server.
Need a server to host it?
Docker, Node, Python, Java and similar stacks usually need a VPS where you can install your own software. A small VPS is enough to start, and you can upgrade later. Hostinger offers both shared web hosting and VPS plans.
Affiliate disclosure: this is an affiliate link. If you buy through it we may earn a commission at no extra cost to you. CRMs are listed independently of any hosting partner. Learn more.
Before real customers go in: read the security and backup checklist →
🌐 Official Website & Documentation
We could not confirm an official hosted plan for REBUILD in its documentation. Self-hosting is the main route.
Third-party providers may offer managed hosting. Always check their terms and that you can export your data.
Self-Hosted vs Hosted by Someone Else
| Factor | Self-Hosted | Managed / third-party |
|---|---|---|
| Cost | No software fee for the open edition. You pay for hosting. | Depends on the provider you choose. |
| Data privacy & control | Data stays on your server. | Data lives on the provider's servers. |
| Maintenance | You install updates and run backups. | The provider handles it. |
| Best for | Teams with a developer or sysadmin, and data-sensitive companies. | Teams who want a fast start and no server work. |
No technical person on the team
→ Ask a developer or managed host to set it up
Avoid running a server you cannot maintain.
Team with a developer or sysadmin
→ Self-Hosted
Lower running cost and full customization.
Data-sensitive or regulated work
→ Self-Hosted on your own server
You decide where data lives and who can access it.
Alternatives to REBUILD
Corteza
Open source low-code platform for building CRM and business apps.
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Open Mercato
TypeScript framework with ready CRM, ERP and commerce modules.
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Iceburg CRM
Metadata-driven Laravel CRM builder with optional AI assist.
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Twenty
A modern, community-driven open source alternative to Salesforce.
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Odoo Community
All-in-one business suite with a capable CRM app.
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ERPNext
Full open source ERP with a strong CRM module.
40.1k • GPL-3.0
Frequently asked questions about REBUILD
Is REBUILD free and open source?
REBUILD is released under GPL-3.0. Always read the LICENSE file in the official repository before you use, modify or redistribute it. License details were verified on 14 October 2026.
What technology does REBUILD use?
REBUILD is built with Java.
Can I self-host REBUILD?
Yes. You can download the source from the official GitHub repository and run it on your own server or VPS. Requirements: Java. It ships with a built-in H2 database for trying it. MySQL 5.6+ is optional but recommended for production.
Does REBUILD have a hosted or cloud version?
We could not confirm an official hosted plan in the project documentation. Check the official website for the latest options.
Who is REBUILD best for?
Teams that want to model their own CRM without coding.
What are good alternatives to REBUILD?
Similar open source projects in this directory include Corteza, Open Mercato, Iceburg CRM. Compare them in the Low-Code Platforms group.
Data verified 14 October 2026 from the project's public repository and documentation. Details change, so check the official sources. See our disclaimer. Found a mistake? Tell us.