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libfyaml

A high-performance C YAML framework with full YAML 1.2 support.

Overview

libfyaml is a modern, feature-complete YAML parser and emitter written in C. It provides full YAML 1.2 specification compliance with exceptional performance and a clean API.

Why libfyaml Matters

High-Performance Parsing

libfyaml is designed for performance-critical applications:

  • Fast Parsing - Optimized C implementation for speed
  • Low Memory Overhead - Efficient memory usage
  • Production Ready - Battle-tested in real-world applications
  • Zero Dependencies - Pure C with no external dependencies

Full YAML 1.2 Compliance

  • Complete implementation of the YAML 1.2 specification
  • Supports all YAML features including anchors, aliases, and tags
  • Strict validation and error reporting
  • Handles complex YAML documents correctly

Modern C Implementation

  • Clean, maintainable codebase
  • Well-documented API
  • Active development and maintenance
  • Strong focus on correctness and standards compliance

How The YAML Company Contributes

We support libfyaml through direct collaboration with its maintainer:

Direct Funding

  • Financial support of Pantelis Antoniou's work on libfyaml
  • Enabling continued development and maintenance
  • Supporting long-term sustainability of the project

Technical Collaboration

  • Contributing pull requests for improvements and fixes
  • Coordinating on security disclosures
  • Providing YAML specification expertise and guidance
  • Supporting roadmap planning and feature development

Personal Relationship

  • Close working relationship with Pantelis Antoniou
  • Regular communication on YAML ecosystem developments
  • Collaborative approach to YAML specification interpretation
  • Mutual support across the C YAML implementation landscape

Part of a Bigger Picture

libfyaml represents our commitment to supporting excellent YAML implementations across all languages. When you support The YAML Company through the YES Program, you're supporting the health of the entire YAML ecosystem, including innovative projects like libfyaml.

Security contact: security@yaml.com

Support the YAML Ecosystem

When you join the YES Program, you support the entire YAML ecosystem, including libfyaml. YES members get:

  • Early notification of security issues across YAML implementations
  • Priority support for YAML-related issues
  • Influence over the YAML ecosystem roadmap
  • Support for high-quality YAML implementations in all languages

Join the YES Program →

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