Acceleo
Acceleo: A focused open-source engine for EMF-based source-code generation. Ranked #9 of 65 in Template Engine Software by our editors (8.6/10); pricing: Free plan; best for teams generating source code from EMF models.
At a glance
- Editor score8.6 / 10
- PricingFree plan
- Best forTeams generating source code from EMF models
- Free planYes
- Paid fromFree
- Facts checked23 Oct 2026
Where it wins
- Template language supports modules, queries, variables, and post-treatments
- Eclipse tooling includes diagnostics, refactoring, profiling, and debugging
- Protected areas preserve manual edits during later regeneration
Where it doesn't
- Focused on EMF model-based generation rather than general-purpose templating
- Requires Eclipse or Java-based workflows for its primary tooling and execution
- Support is provided through community channels and documentation
Our verdict on Acceleo
Acceleo is an open-source model-to-text technology for developers who need to generate source code or other text from EMF models. Teams define templates and queries in Acceleo modules, then run generators through Eclipse or standalone workflows. Its fit spans small, mid-market, and enterprise teams that maintain model-based generation processes, particularly when preserving generated-file edits matters.
The standout capability is its template language and accompanying Eclipse development experience. Modules, queries, variables, and post-treatments support structured generation logic, while syntax highlighting and smart completion assist authoring. Error detection, quick fixes, refactoring, a profiler, and a debugger provide tools for maintaining generators as they evolve. Protected areas let teams retain manually edited portions of generated files across regeneration, addressing a common concern in code-generation workflows. Acceleo has no AI features, so teams seeking AI-assisted generation should look elsewhere.
Acceleo is free and open-source, with deployment centered on self-hosted or desktop use rather than a hosted service. It integrates with Eclipse IDE, Apache Maven, Apache Ant, and Java, allowing generators to run inside an IDE or within build-oriented workflows. These integrations suit teams already working in Eclipse or Java-based toolchains, while the specialized EMF focus can make it a poor choice for projects that need a general-purpose template engine or a different modeling ecosystem. Choose Acceleo for model-driven generation with detailed editor and maintenance tooling; consider alternatives when broad templating support or a hosted product is the priority.
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Acceleo pricing
Acceleo fact sheet
| Free plan | Yes |
|---|---|
| Paid from | Free |
| Rendering mode | Not verified |
| Syntax model | Logic-based |
| Template inheritance | Yes |
| Automatic escaping | Not verified |
| Sandbox mode | Not verified |
| Async rendering | Not verified |
| License model | Open-source |
| Deployment | Self-hosted, Desktop |
| Platforms | Windows, macOS, Linux |
| Support | Community, Docs |
| Built for | Small business, Mid-market, Enterprise (editorial estimate) |
| Integrations | 4 integrations: Eclipse IDE, Apache Maven, Apache Ant, Java |
| Pricing | Free plan |
| Website | eclipse.dev |
| Facts checked | 23 Oct 2026 |
Acceleo integrations
Acceleo lists 4 integrations on its own site.
- Eclipse IDE
- Apache Maven
- Apache Ant
- Java
Alternatives to Acceleo
- JinjaJinja gives Python applications inheritance, configurable rendering, and compilation in an open-source engine.9.4
- TwigA free, open-source PHP engine for compiled templates, inheritance, escaping, and sandboxing.9.3
- Handlebars.jsA free, open-source template engine for JavaScript projects that need reusable HTML.9.2
See all Acceleo alternatives →
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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