Project Summary
onion is a lightweight library to help you create webservers in C programming language. These webservers may be a web application, a means of expanding your own application to give it web functionality or even a fully featured webserver.
The user can create new handlers that serve reading data from a file or creating them. However, there are many default handlers included to address the most frequently required needs.
Features SSL, PAM, django-like templates (otemplates), sessions, threads, i18n...
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In a Nutshell, Onion HTTP server C library...
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took an estimated 7 years of effort (COCOMO model)
starting with its first commit in October, 2010
ending with its most recent commit over 3 years ago
Quick Reference
GNU Affero General Public License v3.0 or later
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These details are provided for information only. No information here is legal advice and should not be used as such.
GNU Lesser General Public License v3.0 only
Permitted
Commercial Use
Modify
Distribute
Place Warranty
Use Patent Claims
Forbidden
Sub-License
Hold Liable
Required
Distribute Original
Disclose Source
Include Copyright
State Changes
Include License
Include Install Instructions
These details are provided for information only. No information here is legal advice and should not be used as such.
Project Security
Vulnerabilities per Version ( last 10 releases )
There are no reported vulnerabilities
Project Vulnerability Report
Security Confidence Index
Vulnerability Exposure Index
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30 Day SummaryNov 25 2025 — Dec 25 2025
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12 Month SummaryDec 25 2024 — Dec 25 2025
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