mozilla/neqo

Health v2 · maintenance only

Adoption not part of the score

2220 stars · 166 forks observed · 2026-08-28

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

Neqo is Mozilla's Rust implementation of the QUIC transport protocol, HTTP/3, and QPACK, used in production by Firefox and usable standalone as a library. It also ships command-line tools (neqo-client, neqo-server) for testing and debugging HTTP/3 endpoints, though the server side is explicitly experimental.

Use cases

• implement QUIC transport in a Rust application
• test an HTTP/3 server with a command-line client
• add HTTP/3 support to a browser or network client
• debug QUIC connections with QLOG logs
• experiment with IETF QUIC and HTTP/3 protocol compliance
• build a standalone HTTP/3 client using NSS for TLS

When to choose

• you need a standards-compliant QUIC/HTTP/3 client library in Rust with a proven production track record in Firefox
• you want interoperability testing tools for HTTP/3 servers and clients
• you prefer TLS backed by Mozilla NSS

When to avoid

• you need a production-ready HTTP/3 server - the neqo server is experimental and not recommended for production
• you want a TLS backend other than NSS
• you need a fully-featured, configurable server for live deployments

Facets

library · maturity active

http-client http-server networking security cli networking web-development developer-tools apis rust windows cross-platform cli quic http3 qpack tls nss firefox ietf-standards qlog udp-transport linux macos

Member repositories

For agents

markdown · JSON · MCP: product_card(name="mozilla/neqo")