Marko
HTML-based templating engine for streaming and async rendering.
- Status
- Generally available
- Last checked
- Checked · Oct 12, 2026
- License
- Open source
- Pricing
- Free tier · from $0
What it is
Marko is an HTML-based templating engine that compiles templates to CommonJS modules, supporting streaming, asynchronous rendering, and custom tags. It's designed for high performance in server-rendered applications.
Marko stands out with its streaming and asynchronous rendering capabilities, making it ideal for high-performance web applications where efficient data handling is critical.
When it fits — and when it doesn’t
A good fit for
Teams building high-performance web apps who need streaming and async rendering capabilities.
Developers looking to extend HTML syntax for more expressive templates.
Look elsewhere if
Projects requiring real-time data updates without full page reloads, as it focuses on server-rendered content.
Applications that do not require or benefit from the performance optimizations provided by Marko.
Known weaknesses
Each one links to the public issue, changelog or docs page it came from, where we have one.
- 01
Limited community support and small user base
Few active contributors and limited third-party resources
- 02
Complex setup for beginners
Requires understanding of CommonJS modules, streaming concepts, and custom tag creation
- 03
Documentation is sparse and not beginner-friendly
Lack of comprehensive tutorials and examples for common use cases
- 04
Performance benefits may be negligible in non-server-rendered applications
Streaming and asynchronous rendering optimizations are less impactful without server-side rendering
What it does well
Streaming and asynchronous rendering capabilities.
Custom tag support for extending HTML syntax.
Compilation to CommonJS modules for performance.
Pricing
- Free tier
- YesOpen source — free to use
- Paid from
- $0
- Model
- Flat rate
- Enterprise plan
- No
Pricing not independently confirmed — check the vendor’s page.
Performance benchmarks
How Fast Is It?
Set up Marko
Setup steps, common gotchas and what to check after 30 days.
Get the badge
A small badge for Marko’s README or site: its name, “Tracked on AI Navigator”, and the availability status and check month from this page. It updates as the catalog does.
Markdown
[](https://navigateaitools.com/explorer/tool/marko)HTML
<a href="https://navigateaitools.com/explorer/tool/marko"><img src="https://navigateaitools.com/badge/marko.svg" alt="Marko — tracked on AI Navigator" height="58"></a>