compare
H2O vs nginx
The same facts for both, read from GitHub every night, and the relation a person reviewed.
| Fact | H2O | nginx |
|---|---|---|
| Language | C | C |
| Licence | MIT | BSD-2-Clause |
| Stars | 12k | 32k |
| Latest | tag-no-more-releases | release-1.31.6 |
| Last push | 2026-10-06 | 2026-09-30 |
| Release cadence | about 1394 days between releases | about 14 days between releases |
| Active contributors | 3 commit authors on the default branch in the last 90 days | 22 commit authors on the default branch in the last 90 days |
| Flags | none | none |
How they relate
H2O replaces nginx. Alternatives to nginx →
PartialHTTP/1, HTTP/2 and HTTP/3 server and reverse proxy, scriptable with mruby.
H2O
- tag-no-more-releases2026-01-19we no longer tag versions!
- v2.3.0-beta22019-08-13H2O version 2.3.0-beta2pre-release
- v2.2.62019-08-13H2O version 2.2.6
- v2.3.0-beta12018-06-02H2O version 2.3.0-beta1pre-release
- v2.2.52018-06-01H2O version 2.2.5
nginx
- release-1.30.52026-09-15nginx-1.30.5 stable version has been released, with fixes for buffer overflow vulnerability when using ngx_http_v3_modu…
- release-1.31.62026-09-15nginx-1.31.6 mainline version has been released, with fixes for buffer overflow vulnerability when using ngx_http_v3_mo…
- release-1.31.52026-09-02nginx-1.31.5 mainline version has been released, featuring control API, predicate locations, client_body_early_read dir…
- release-1.31.42026-08-19nginx-1.31.4 mainline version has been released.
- release-1.30.42026-07-15nginx-1.30.4 stable version has been released, with fixes for buffer overflow vulnerability when using map with regex (…
H2O
unsigned The latest release, tag-no-more-releases, carries no signature GitHub could verify.
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nginx
unsigned The latest release, release-1.31.6, carries no signature GitHub could verify.
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