libngtcp2 ☆
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Description:
IETF QUIC protocol implementation
Type: Formula  |  Latest Version: 1.18.0@0  |  Tracked Since: Dec 23, 2025
Links: Homepage  |  formulae.brew.sh
Category: Networking
Tags: quic http3 networking protocol library
Install: brew install libngtcp2
About:
libngtcp2 is a high-performance, open-source implementation of the IETF QUIC transport protocol and HTTP/3. It provides robust libraries for building QUIC-enabled applications, featuring advanced congestion control and TLS 1.3 integration. This enables developers to create fast, secure, and low-latency network services that overcome TCP limitations.
Key Features:
  • IETF QUIC and HTTP/3 protocol implementation
  • Pluggable congestion control algorithms (e.g., CUBIC, BBR)
  • Integration with OpenSSL, BoringSSL, and GnuTLS for encryption
  • Cross-platform support including Linux, macOS, and Windows
Use Cases:
  • Developing high-performance web servers and proxies with HTTP/3 support
  • Building low-latency applications like online gaming and real-time communication
  • Creating custom network transports that require multiplexing and reliability
Alternatives:
  • lsquic – Another mature QUIC library; libngtcp2 is often noted for its modularity and broader TLS backend support.
  • quiche – Cloudflare's QUIC implementation; libngtcp2 is a more established reference implementation with a C-focused API.
Version History
Detected Version Rev Change Commit
Dec 23, 2025 11:06am 1.18.0 0 VERSION_BUMP db09d651
Oct 17, 2025 11:05am 0 VERSION_BUMP b7556514
Sep 24, 2025 3:40pm 0 VERSION_BUMP 96e18327
Sep 10, 2025 9:41am 0 VERSION_BUMP ca726da8
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