Last Updated on February 27, 2026
HappyX is a web framework with asynchronous, macro-oriented, full stack support. It aims to combine the features of Jester and Karax and slightly improves them.
HappyX is very simple to use.
This is free and open source software.
Key Features
- Multiple options for HTTP server! Happyx uses asynchttpserver as default HTTP server (httpx via -d:happyxHttpx, httpbeast via -d:happyxBeast and microhttpserver via -d:happyxMicro as alternative HTTP servers).
- Support SPA on JS backend and SSR on other backends.
- Build HTML, CSS and pure JS with buildHtml, buildStyle and buildJs macros.
- Request models that supports JSON/XML/Form-Data/x-www-form-urlencoded with model macro.
- Routing and powerful path params.
- Assignment path params with pathParams macro.
- Powerful mounting sub-applications with mount macro.
- Logging with -d:debug.
- Automatic translate with -d:hpxTranslate or -d:translate flags.
- CLI tool for creating, serving and building your projects.
- Hot code reloading (only for SPA projects as of now).
- Python bindings.
- NodeJS bindings.
Website: github.com/HapticX/happyx
Support:
Developer: HapticX
License: MIT License
HappyX is written in Nim. Learn Nim with our recommended free tutorials.
Related Software
| Nim Web Frameworks | |
|---|---|
| Prologue | Powerful and flexible web framework for building elegant web services |
| Jester | Sinatra-like web framework |
| Karax | Single Page Application framework |
| NIMWC | Nim fullstack website framework. NimWC is compiled to C code |
| HappyX | Macro-oriented asynchronous full-stack web framework |
| Basolato | Asynchronous full-stack web framework |
| scorper | Elegant, performant, asynchronous micro web framework. |
| Nexus | High-level web framework with batteries included |
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