ngtcp2/nghttp3
HTTP/3 library written in C observed · 2026-08-28
Health v2 · maintenance only
93/100
- Activity 98
- Release rhythm 83
- Longevity 100
How is this computed?
round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-09-02. Adoption (stars, forks) is never an input.
- gap_med: 46.5
- age_days: 2854
- days_rel: 38
- days_push: 14
- n_releases_24m: 15
Adoption not part of the score
1135 stars · 130 forks observed · 2026-08-28
What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded
nghttp3 is a C implementation of HTTP/3 (RFC 9114) over QUIC and QPACK (RFC 9204). It is QUIC-transport-agnostic and supports extensions like extensible prioritization, WebSockets bootstrapping, and the ORIGIN extension.
Use cases
- implement http3 in c
- add http/3 support to a server
- qpack header compression library
- build a quic-based http client
- integrate http3 into curl
- parse http3 frames
When to choose
- you need a low-level, QUIC-implementation-agnostic HTTP/3 library in C
- you want RFC-compliant HTTP/3 with QPACK and extension support
- you are building a custom HTTP/3 client or server on top of your own QUIC stack
When to avoid
- you want a complete HTTP/3 server or client out of the box
- you need server push, which is not supported
- you prefer a higher-level language binding or all-in-one QUIC+HTTP/3 stack
Facets
library · maturity active
http-server http-client serialization networking web-development networking developer-tools windows cpp c http3 quic qpack rfc9114 rfc9204 c-library webtransport-adjacent linux macos
2 sources
- readme: https://github.com/ngtcp2/nghttp3 · fetched 2026-08-28 · 8dbe7d64bd7b
- homepage: https://nghttp2.org/nghttp3/ · fetched 2026-08-29 · 418fd323d3bd
Member repositories
| Repository | Role | Health v2 |
|---|---|---|
| ngtcp2/nghttp3 | main | 93 |
For agents
Data as of 2026-08-30T08:39:29.467469+00:00 · Report a problem