davidmoreno/onion

Health v2 · maintenance only

Flags: no_license

Adoption not part of the score

2090 stars · 256 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

Onion (libonion) is a lightweight C library for building HTTP servers and web applications by layering URL handlers. It is designed to add web functionality to existing programs or create small-footprint web-facing services, with SSL support and built-in handlers for common needs.

Use cases

• add an HTTP API to an existing C application
• build a small embedded web server with low memory footprint
• serve dynamic content with custom URL handlers in C
• create a web application with SSL/TLS support
• build a lightweight REST service on ARM or embedded Linux
• implement virtual hosts and layered request handling

When to choose

• you need HTTP server functionality inside a C program
• you target embedded or resource-constrained systems
• you want a layered handler/middleware model with SSL support
• you prefer a library over deploying a standalone web server

When to avoid

• you need a modern async framework with an active ecosystem
• you want a full-featured standalone web server executable
• your stack is not C/C++
• you need frequent updates or long-term active maintenance

Facets

library · maturity maintenance

http-server web-framework routing middleware auth templating web-development backend embedded-systems apis cross-platform c embedded http-server-library c-library lightweight ssl-support handler-layers embedded-web-server linux macos

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