mozilla

neqo

Rust2019–2025

mozilla / neqo

neqo

Neqo, the Mozilla Firefox implementation of QUIC in Rust

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11Distinct people

13Mentions

1Explicit recommenders

2.3KGitHub stars

REPOSITORY AT A GLANCE

What to know before exploring

What it is

Neqo, the Mozilla Firefox implementation of QUIC in Rust

GitHub

Where it is used

No documented product use was verified in the last source check.

What people are saying

It's been really great to see so much QUIC and HTTP/3 stuff in Rust. We have quiche, there's also https://crates.io/crates/quinn, and Mozilla's https://github.com/mozilla/neqo…

steveklabnik used a recommendation phrase. One indexed comment matches. This is a phrase match, not a verdict.

No classified warning is attached to this page. Read the discussions before treating silence as approval.

Also in these discussions

quinn-rs/quinn · linked in 3 of the same discussions
cloudflare/quiche · linked in 2 of the same discussions

Mentioned in the same Hacker News threads. That is not proof they are substitutes.

This week on Hacker News

Nov 7–Nov 14 UTC · Direct repository links and separately labeled related project stories. Indexed through 11/14/2026, 3:03:16 PM UTC.

No direct repository links were found in the indexed HN discussions over the past seven days. Older discussions are available below.

Mentions over time

HN mentions by year13 dated mentions

Observed mentions: 2019-06-28 15:35:51 UTC to 2025-09-28 12:17:57 UTC.

Counts come from the repository’s dated source evidence. Index cutoff: 2026-11-02 08:16:59 UTC.

View mention counts and date ranges

UTC ranges include their start and exclude their end. Select a period to filter the source evidence.
Period	Start (UTC)	End (exclusive, UTC)	Mentions	Submissions	Comments
2019	2019-01-01 00:00:00 UTC	2020-01-01 00:00:00 UTC	3	2	1
2020	2020-01-01 00:00:00 UTC	2021-01-01 00:00:00 UTC	2	0	2
2021	2021-01-01 00:00:00 UTC	2022-01-01 00:00:00 UTC	4	0	4
2022	2022-01-01 00:00:00 UTC	2023-01-01 00:00:00 UTC	2	0	2
2023	2023-01-01 00:00:00 UTC	2024-01-01 00:00:00 UTC	0	0	0
2024	2024-01-01 00:00:00 UTC	2025-01-01 00:00:00 UTC	1	0	1
2025	2025-01-01 00:00:00 UTC	2026-01-01 00:00:00 UTC	1	0	1

What Hacker News says

13 sources

mxinden·Sep 28, 2025

_Author here_. 4 Gbit/s is on our rather dated benchmark machines. If you run the below command on a modern laptop, you likely reach higher throughput. (Consider disabling PMTUD to use a realistic Internet-like MTU. We do the same on our benchmark machines.) https://github.com/mozilla/neqo cargo bench --features bench --bench main -- "Download"

In Fast UDP I/O for Firefox in Rust

johnp_·Sep 9, 2024

Looks like Mozilla is currently working on implementing `sendmmsg` and `recvmmsg` use in neqo (Mozilla's QUIC implementation) [1]. [1] https://github.com/mozilla/neqo/issues/1693

In QUIC is not quick enough over fast internet

wongarsu·Feb 17, 2022

Also: https://github.com/mozilla/neqo - Neqo, an Implementation of QUIC written in Rust

In S2n-QUIC (Rust implementation of QUIC)

steveklabnik·Jan 13, 2022

Mozilla has a Rust QUIC implementation (one of three good ones in Rust) https://github.com/mozilla/neqo I'm not sure why it's not used here.

In Firefox – Fix parsing of content-length http3 header

1vuio0pswjnm7·May 28, 2021

Is it possible to compile quicly cli (referenced in the blog post) with musl instead of glibc. I had to add signal.h and it then compiled successfully (using openssl-1.1k) but I got illegal instruction core dumped when executing cli. https://github.com/h2o/quicly There are a few Rust alternatives for QUIC. Anyone tried them and have comments. https://github.com/cloudflare/quiche https://github.com/quinn-rs/quinn https://github.com/mozilla/neqo

In QUIC is now RFC 9000

pas·Apr 17, 2021

The reason is the need to have total flexibility (control). [0] I reckon to make it as painless as possible to integrate it into Firefox. Also probably a tiny bit of not-invented-here syndrome too :) [0] https://github.com/mozilla/neqo/issues/81

In QUIC and HTTP/3 Support Now in Firefox Nightly and Beta

est31·Apr 17, 2021

Btw, the QUIC library that Firefox relies on is written in Rust: https://github.com/mozilla/neqo A bit weird though that they didn't cooperate with existing Rust quic stacks like quinn. https://github.com/quinn-rs/quinn

In QUIC and HTTP/3 Support Now in Firefox Nightly and Beta

nextaccountic·Apr 17, 2021

does it use neqo? https://github.com/mozilla/neqo

In QUIC and HTTP/3 Support Now in Firefox Nightly and Beta

steveklabnik·Oct 7, 2020

There are like, three different QUIC implementations in Rust. And one of them is by (and being used by) Cloudflare, so it's going to have pretty significant production use. (The others may be as well but I am less familiar with where they're used) * https://github.com/cloudflare/quiche * https://github.com/djc/quinn * https://github.com/mozilla/neqo/

In Chrome is deploying HTTP/3 and IETF QUIC

heycam·Apr 29, 2020

Nice. For comparison, here is Mozilla's implementation in Rust, which is integrated into Firefox: https://github.com/mozilla/neqo

In MsQuic – QUIC Implementation from Microsoft

steveklabnik·Sep 26, 2019Recommendation phrase

It's been really great to see so much QUIC and HTTP/3 stuff in Rust. We have quiche, there's also https://crates.io/crates/quinn, and Mozilla's https://github.com/mozilla/neqo With my "Rust core team member" hat on, normally I'd want to see one good go-to library for an ecosystem. With my "I love web protocols" hat on, I want to see dozens of independent implementations. I wear hat #2 more than hat #1 when it comes to HTTP/3.

In HTTP/3: the past, the present, and the future

enz·Sep 22, 2019Submission

Neqo, an Implementation of QUIC Written in Rust

141 points · Open discussion

ngaut·Jun 28, 2019Submission

Neqo: Mozilla's Rust QUIC Implementation

1 points · Open discussion