halo
Halo is an open-source, Java-based website builder and CMS supporting blogs, knowledge bases, corporate sites, and online storefronts. It offers a visual admin panel, Docker deployment, and an ecosystem of themes and plugins. The community edition is free under GPLv3; commercial tiers add mobile apps, AI features, and e-commerce capabilities.
Key facts
Objective fields from the source. Values we can't verify are shown as “Unknown” rather than guessed.
| Field | Value |
|---|---|
| Repository | halo-dev/halo |
| Owner | halo-dev |
| Primary language | Java |
| License | GPL-3.0 — OSI-approved |
| Stars | 39.2k |
| Forks | 10.3k |
| Open issues | 126 |
| Latest release | v2.25.4 (2026-06-24) |
| Last updated | 2026-07-07 |
| Source | https://github.com/halo-dev/halo |
What halo is
Written in Java with Docker-first deployment model. Provides REST API, theme/plugin architecture, and database persistence. Community version includes admin UI, content management, and multi-site support. Commercial variants layer on proprietary features (mobile apps, AI, payment integration).
Get the halo source
Clone the repository and explore it locally.
git clone https://github.com/halo-dev/halo.gitcd halo# follow the project's README for install & configurationNeed it deployed, integrated, or customized instead? DEV.co ships production installs.
Best use cases
Implementation considerations
- Java runtime (version not specified in data) and a relational database (MySQL, PostgreSQL, or H2 inferred from Docker examples) must be provisioned before deployment.
- SSL/TLS, reverse-proxy configuration, and DNS setup are manual; the docs recommend 1Panel for simplification, but this adds a second orchestration layer.
- Plugin/theme development requires understanding Halo's extension APIs; ecosystem is partially in Chinese, which may affect resource availability for non-Chinese-speaking teams.
- Migration from other CMS platforms (WordPress, Ghost, etc.) requires custom scripting; no documented migration tools provided in the excerpt.
- GPL-3.0 compliance audits should be conducted before production deployment if code will be forked or integrated into proprietary products.
When to avoid it — and what to weigh
- Proprietary, closed-source deployment required — GPL-3.0 mandates source-code disclosure for derivative works. If you cannot open-source modifications or resell without reciprocal licensing, Halo is unsuitable.
- High availability with minimal operational overhead needed — Halo requires Java runtime, database setup, and reverse-proxy configuration. No managed SaaS option is provided in the community edition. Requires DevOps expertise or third-party orchestration (e.g., 1Panel).
- Enterprise SLA and commercial support guarantees mandatory — Community version offers no formal support contract, SLA, or vendor accountability. Issues depend on community response. Commercial tiers exist but terms and coverage are not detailed in public data.
- Lightweight, low-resource embedded CMS — Java-based architecture carries higher memory and CPU footprint compared to PHP or Node-based alternatives. Unsuitable for resource-constrained environments (IoT, edge, shared hosting with strict limits).
License & commercial use
Halo is licensed under GNU General Public License v3.0 (GPL-3.0). This is a copyleft license requiring: (1) any derivative work to be open-sourced under the same license, (2) source code to be made available to end users, and (3) modified versions to carry notice of changes. It is not a permissive license.
GPL-3.0 permits commercial use (e.g., running Halo for a paid service) provided no proprietary modifications are incorporated into the deployed system without open-sourcing them. Selling Halo as-is or with GPL-compliant extensions is permissible. However, integrating Halo into a closed-source product, charging for access to custom derivatives without source disclosure, or reselling without compliance is prohibited. The project also offers paid commercial tiers (Professional, Commerce editions) with additional features; terms and licensing of those tiers are not detailed in public data and require direct inquiry. Consult legal counsel before monetization.
DEV.co evaluation signals
Editorial assessment — not user reviews. Directional, with an explicit confidence level.
| Signal | Assessment |
|---|---|
| Maintenance | Active |
| Documentation | Adequate |
| License clarity | Clear |
| Deployment complexity | Moderate |
| DEV.co fit | Good |
| Assessment confidence | High |
Data does not provide security audit reports, CVE history, or authentication/encryption implementation details. Production deployment should include: (1) credential rotation and secrets management, (2) network isolation and firewall rules, (3) database backup and disaster recovery protocols, (4) dependency scanning (Java libraries) for vulnerabilities, and (5) regular updates to patch security fixes. GPL-3.0 requires auditing any forked code for unintended vulnerabilities. No claims of penetration testing or formal security certification are stated.
Alternatives to consider
WordPress
Industry-standard CMS with larger ecosystem, managed hosting options, and permissive GPL-2.0 license. Better for non-technical users and sites with minimal customization; less suitable if deep data sovereignty or Java stack integration is required.
Ghost
Modern, Node.js-based CMS optimized for content creators with cleaner UX, built-in SEO, and membership features. Proprietary business model; offers managed hosting. Lighter resource footprint than Halo but less flexible for e-commerce and plugin architecture.
Strapi
Headless CMS (Node.js) with REST and GraphQL APIs, database-agnostic design, and strong developer experience. Better for API-first applications and decoupled frontends; less opinionated UI for traditional content sites than Halo.
Build on halo with DEV.co software developers
Review the full deployment guide, audit GPL-3.0 compliance requirements, and test the demo (demo.halocms.site) to assess fit for your content and e-commerce needs.
Talk to DEV.coRelated open-source tools
Surfaced by semantic similarity across the DEV.co open-source index.
Related on DEV.co
Explore the category and the services that help you build with it.
halo FAQ
Can we use Halo in a commercial SaaS product without open-sourcing our customizations?
What database backends does Halo support?
Is there a managed/hosted version of Halo?
How is the project funded and who maintains it?
Software development & web development with DEV.co
DEV.co is a software development agency delivering custom software development services to companies building on open source. Our software developers and web developers design, integrate, and ship production systems — spanning web development, APIs, AI, data, and cloud. If halo is part of your open-source cms roadmap, our team can implement, customize, migrate, and maintain it.
Evaluate Halo for Your Project
Review the full deployment guide, audit GPL-3.0 compliance requirements, and test the demo (demo.halocms.site) to assess fit for your content and e-commerce needs.