zotonic
Zotonic is an open-source web framework and CMS built on Erlang, designed for high-performance, real-time applications. It combines content management capabilities with a developer-friendly framework for building dynamic websites and distributed applications.
Key facts
Objective fields from the source. Values we can't verify are shown as “Unknown” rather than guessed.
| Field | Value |
|---|---|
| Repository | zotonic/zotonic |
| Owner | zotonic |
| Primary language | Erlang |
| License | Apache-2.0 — OSI-approved |
| Stars | 846 |
| Forks | 207 |
| Open issues | 193 |
| Latest release | 0.93.0 (2026-07-07) |
| Last updated | 2026-07-08 |
| Source | https://github.com/zotonic/zotonic |
What zotonic is
Erlang-based web framework with integrated CMS, supporting real-time features and horizontal scalability through Erlang's concurrency model. Built-in content management, templating, and extensibility via modules; CI/CD pipelines (Test, Dialyzer) indicate active type-checking and testing practices.
Get the zotonic source
Clone the repository and explore it locally.
git clone https://github.com/zotonic/zotonic.gitcd zotonic# follow the project's README for install & configurationNeed it deployed, integrated, or customized instead? DEV.co ships production installs.
Best use cases
Implementation considerations
- Erlang/OTP familiarity is a prerequisite; consider training or hiring before committing to production use.
- Module architecture allows incremental feature addition; plan modular design early to ease long-term maintenance.
- Dialyzer CI indicates type-checking discipline; leverage Erlang's type system (specs) to reduce runtime errors in custom code.
- Docker/Podman images are available per README; containerization can simplify deployment but requires understanding Erlang release management.
- Security contact at [email protected] provided; establish incident response process aligned with their disclosure timeline.
When to avoid it — and what to weigh
- Team lacks Erlang expertise — Erlang is not mainstream; hiring, onboarding, and knowledge transfer are significantly harder than for Node.js, Python, or Java-based frameworks.
- Need large ecosystem of third-party packages — While Zotonic has modules, it does not approach the breadth of npm, PyPI, or Maven Central. Integrations with popular SaaS/tools may require custom development.
- Lightweight deployment or serverless environments — Erlang runtime is heavier than Go or Node; cold-start and container image size may be less optimal for edge computing or strict resource constraints.
- Rapid prototyping with minimal backend work — Zotonic's full-stack nature suits projects needing robust backends, but introduces more upfront architecture decisions than headless CMS options.
License & commercial use
Apache License 2.0 (Apache-2.0), a permissive OSI-approved license. Allows commercial use, modification, and distribution with attribution and patent protection clauses.
Apache-2.0 explicitly permits commercial use, reproduction, and derivative works. No royalties or special licensing fees are imposed. However, consult your legal team regarding patent indemnification scope and trademark usage. The license itself does not restrict commercial deployment.
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 | High |
| DEV.co fit | Good |
| Assessment confidence | High |
Dedicated security contact ([email protected]) provided, indicating responsible disclosure process. No known vulnerabilities mentioned in excerpt. Apache-2.0 license includes explicit patent and warranty disclaimers. Standard web framework attack surface (CSRF, injection, etc.) applies; no substitute for application-level security review and dependency audits. Erlang's isolation model may mitigate some classes of memory-safety issues, but not all security categories.
Alternatives to consider
Phoenix (Elixir) / Rails (Ruby)
More mainstream languages, larger ecosystems, and more abundant hiring pools. Phoenix offers similar real-time capabilities with lower Erlang learning curve (Elixir syntax).
Django / Flask (Python)
Simpler onboarding, massive package ecosystem, and ubiquitous hosting options. Trade-off: lower concurrency efficiency, but sufficient for most traditional web apps.
Wagtail / Strapi (Python / Node.js)
Modern headless CMS options with better SaaS integrations and third-party plugin ecosystems. Better fit if decoupling frontend from backend is acceptable.
Build on zotonic with DEV.co software developers
Zotonic is ideal if you need a high-concurrency, real-time web platform with integrated content management and can invest in Erlang expertise. Contact our team to discuss technical fit, hiring strategy, and deployment architecture.
Talk to DEV.coRelated on DEV.co
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zotonic FAQ
Is Zotonic free to use commercially?
How difficult is it to hire Erlang developers?
Can Zotonic scale horizontally?
What is the learning curve for a Rails or Django developer?
Software development & web development with DEV.co
From first prototype to production, DEV.co delivers software development services around tools like zotonic. Our software development agency staffs experienced software developers and web developers for custom software development, web development, integrations, and ongoing support across open-source cms and beyond.
Evaluate Zotonic for Your Next Project
Zotonic is ideal if you need a high-concurrency, real-time web platform with integrated content management and can invest in Erlang expertise. Contact our team to discuss technical fit, hiring strategy, and deployment architecture.