Implementations

This wiki tracks known implementations of HTTP/2. See also our Tools listing.

Please add your implementation below.

name	language	version	role(s)	negotiation(s)	protocol id(s)	refer
Ace	Elixir		client, server	ALPN	h2
Aerys	PHP		server	ALPN, Upgrade, direct	h2, h2c
Akamai GHost	C++		intermediary	ALPN, NPN	h2, h2-14
Apache HTTP Server 2.4.17+	C		server	ALPN, Upgrade, direct	h2, h2c
Apache HttpComponents 5.0-beta1	Java		client,server	ALPN, Upgrade, direct	h2
Apache Traffic Server v5.3.0	C++		intermediary	ALPN, NPN	h2, h2-14
Apache Tomcat 8.5+	Java		Server	ALPN, Upgrade, direct	h2, h2c
Armeria	Java		client, server	ALPN, Upgrade, direct	h2, h2c
http4s-blaze	Scala		server	ALPN	h2, h2-14
Brocade Traffic Manager (formerly Riverbed/Zeus TM)	C++		Server	ALPN, Upgrade, direct	h2, h2c
Chatterbox	Erlang		Server, Client	ALPN	h2
Chromium	C++		client	ALPN	h2, h2-14
Chicken Scheme hpack lib	Chicken Scheme		hpack	direct	h2-14
cl-http2-protocol	Common Lisp		client, server	NPN, direct	h2-14
curl and libcurl	C		client	ALPN, NPN, Upgrade, Direct	h2-14, h2c-14
Cutelyst	C++	2.0+	Server	ALPN, NPN, Upgrade, Direct	h2, h2c
Dart	Dart		client, server	ALPN, direct	h2
Deuterium	C		client, server	ALPN, direct	h2, h2-14, h2c, h2c-14
E2 Systems PATH	C		Client, Proxy, Server (Testing tool)	ALPN	h2
elixir-hpack	Elixir		HPACK
Ericsson MSP			proxy	NPN, Upgrade, direct	h2, h2-14, h2c, h2c-14
F5	C		server, proxy	ALPN, NPN	h2 (from BIG-IPv12.0.0 onwards)
GFE	C++		intermediary	ALPN, NPN	h2
HAProxy	C	1.8+	intermediary	ALPN, NPN	h2
h2	Rust		client, server		h2, h2c
H2O	C		Server, proxy	ALPN, NPN, Upgrade, direct	h2, h2-14, h2-16
HH	C		Server	ALPN	h2
Haskell http2 lib	Haskell		HPACK, framing
hpack	Erlang		HPACK
hpack	Swift		HPACK
http-2	Ruby		server, client	ALPN, NPN, Upgrade, direct	h2, h2c, h2-17
http2	Go		client, server	NPN, ALPN	h2, h2-14
http2	Go		server, client	ALPN, Upgrade	h2, h2c
http2-client	Haskell		client	ALPN, direct	h2
http2dotnet	C#		server, client	ALPN & NPN (external), Upgrade, direct	h2, h2c
HttpTwo	C#		client	direct	h2, h2c
httpbis	Rust		client, server
hyper	Python		client, server	NPN, ALPN	h2, h2c
Shaka Technologies Ishlangu Load Balancer	C, Java		server, proxy	ALPN	h2
Jetty	Java		client, intermediary, server	ALPN, Upgrade, Direct	h2, h2-17, h2-14, h2c, h2c-17
libcno	C / Python wrapper		Server, Client, HPACK	ALPN, Upgrade, direct	h2, h2c
LiteSpeed Enterprise	C++		Server	ALPN, NPN, Upgrade	h2, h2-17, h2-14, h2c
ls-hpack	C		HPACK
lua-http	Lua		client, server	ALPN, direct	h2
Lucid	Erlang		Server	NPN, direct	h2, h2-16, h2-14
Microsoft	C/C++		Client, Server	ALPN	h2
Microsoft Internet Explorer			client	ALPN (others?)	h2 (Windows 10 only?)
mod_h2	C		Server	ALPN, Upgrade, direct	h2, h2c
Mozilla Firefox	C++	49	client	ALPN, NPN	h2-15, h2-14, h2	http://caniuse.com/#search=http2
Netty	Java		client, server	ALPN, NPN, Upgrade, direct	h2, h2c
Nimble Streamer	C++	3.6.2-1	server	ALPN	h2	Live HLS and MPEG-DASH only
nghttp2	C		client, server, intermediary	ALPN, NPN, Upgrade, direct	h2, h2-16, h2-14, h2c
Radware	C++/C		proxy, server	ALPN	h2
NGINX	C	1.9.5+	server	ALPN, NPN, direct	h2, h2c	Open Source NGINX 1.9.5 Released with HTTP/2 Support
Node.js	Node.js	8.4.0+	server, client	ALPN, NPN, direct	h2, h2c
node-http2	Node.js		server, client	ALPN, NPN, direct	h2
node-spdy	Node.js		server, client	ALPN, NPN, direct	h2, h2c
nuster	C	1.8+	intermediary	ALPN, NPN	h2
OkHttp	Android, Java		mock server, client	ALPN, NPN	h2
ocaml-h2	OCaml		server, client	ALPN, Upgrade, direct	h2, h2c
Fast Android Networking	Android, Java		client	ALPN, NPN	h2
OpenLiteSpeed	C++		Server	ALPN, NPN, Upgrade	h2, h2-17 , h2-14, h2c
Protocol::HTTP2	Perl		server, client	ALPN, NPN, Upgrade, direct	h2, h2c
River	Elixir		client	ALPN	h2
Sasazka	Node.js		server	NPN
second-transfer	Haskell		server	ALPN	h2-14, h2
ShimmerCat	Haskell		server	ALPN, Ahead Of Time Transfer Engine	h2
SuaveIO	F#		server		h2 (not yet ready, pull req: https://github.com/SuaveIO/suave/pull/434)
Swoole	PHP		server	ALPN, NPN, direct	h2, h2c
Trusterd	C/mruby		client, server	ALPN, NPN, direct	h2, h2c
Twisted	Python		server	NPN, ALPN	h2
Twitter	C++		server, client	ALPN, NPN	h2
Undertow	Java		Server, Intermediary	ALPN, Upgrade
Vert.x	Java		Client, Server	ALPN, Upgrade, direct	h2, h2c
WASD	C/OpenVMS		Server	ALPN, Upgrade, direct	h2, h2c
Warp	Haskell		Server	ALPN, direct
Wget2 and libwget	C		Client	ALPN?	? (libnghttp2)
Wireshark	C		other	ALPN, NPN, Upgrade, direct
WKWebView	Obj-C, Swift		client
cashpack	C		HPACK
proxygen	C++		Server, Client	ALPN, NPN, Upgrade	h2
firefly	Java		Server, Client	ALPN, Upgrade	h2, h2c
heaphttpd	C++		Server	ALPN, Upgrade	h2, h2c
HTTP-2-server	C#	0.1.0	Server	ALPN, Upgrade	h2, h2c
http2_client	Prolog		Client	ALPN	h2
Tempesta FW	C	0.7.0	Proxy	ALPN	h2

Older Implementations

name	version	language	role(s)	negotiation(s)	protocol id(s)	refer
http2-katana	C#/C		server, test client	ALPN, Upgrade	h2-12
http2-perl	Perl		client, server	NPN	h2-04
iij-http2	NodeJS		client, server	ALPN, NPN	h2-13
http2-go	Go		client, server	NPN	h2-12