Lego

ACME client and library for Let's Encrypt and other ACME CAs written in Go.

lego is an independent, free, and open-source project, if you value it, consider supporting it! ❤️

Everybody thinks that the others will donate, but in the end, nobody does.

So if you think that lego is worth it, please consider donating.

Features

ACME v2 RFC 8555
- Support RFC 8737: TLS Application‑Layer Protocol Negotiation (ALPN) Challenge Extension
- Support RFC 8738: certificates for IP addresses
- Support RFC 9773: Renewal Information (ARI) Extension
- Support draft-ietf-acme-profiles-00: Profiles Extension
Comes with about 180 DNS providers
Register with CA
Obtain certificates, both from scratch or with an existing CSR
Renew certificates
Revoke certificates
Robust implementation of ACME challenges:
- HTTP (http-01)
- DNS (dns-01)
- TLS (tls-alpn-01)
SAN certificate support
CNAME support by default
Custom challenge solvers
Certificate bundling
OCSP helper function

Installation

How to install.

Usage

as a CLI
as a library

Documentation

Documentation is hosted live at https://go-acme.github.io/lego/.

DNS providers

Detailed documentation is available here.

If your DNS provider is not supported, please open an issue.

35.com/三五互联	Active24	Akamai EdgeDNS	Alibaba Cloud DNS
AlibabaCloud ESA	all-inkl	Alwaysdata	Amazon Lightsail
Amazon Route 53	Anexia CloudDNS	ArtFiles	ArvanCloud
Aurora DNS	Autodns	Axelname	Azion
Azure (deprecated)	Azure DNS	Baidu Cloud	Beget.com
Binary Lane	Bindman	Bluecat	Bluecat v2
BookMyName	Brandit (deprecated)	Bunny	Checkdomain
Civo	Cloud.ru	CloudDNS	Cloudflare
ClouDNS	CloudXNS (Deprecated)	ConoHa v2	ConoHa v3
Constellix	Core-Networks	CPanel/WHM	Czechia
DDnss (DynDNS Service)	Derak Cloud	deSEC.io	Designate DNSaaS for Openstack
Digital Ocean	DirectAdmin	DNS Made Easy	DNSExit
dnsHome.de	DNSimple	DNSPod (deprecated)	Domain Offensive (do.de)
Domeneshop	DreamHost	Duck DNS	Dyn
DynDnsFree.de	Dynu	EasyDNS	EdgeCenter
Efficient IP	Epik	EuroDNS	Exoscale
External program	F5 XC	freemyip.com	FusionLayer NameSurfer
G-Core	Gandi	Gandi Live DNS (v5)	Gigahost.no
Glesys	Go Daddy	Google Cloud	Google Domains
Gravity	Hetzner	Hosting.de	Hosting.nl
Hostinger	Hosttech	HTTP request	http.net
Huawei Cloud	Hurricane Electric DNS	HyperOne	IBM Cloud (SoftLayer)
IIJ DNS Platform Service	Infoblox	Infomaniak	Internet Initiative Japan
Internet.bs	INWX	Ionos	Ionos Cloud
IPv64	ISPConfig 3	ISPConfig 3 - Dynamic DNS (DDNS) Module	iwantmyname (Deprecated)
JD Cloud	Joker	Joohoi's ACME-DNS	KeyHelp
Leaseweb	Liara	Lima-City	Linode (v4)
Liquid Web	Loopia	LuaDNS	Mail-in-a-Box
ManageEngine CloudDNS	Manual	Metaname	Metaregistrar
mijn.host	Mittwald	myaddr.{tools,dev,io}	MyDNS.jp
MythicBeasts	Name.com	Namecheap	Namesilo
NearlyFreeSpeech.NET	Neodigit	Netcup	Netlify
Nicmanager	NIFCloud	Njalla	Nodion
NS1	Octenium	Open Telekom Cloud	Oracle Cloud
OVH	plesk.com	Porkbun	PowerDNS
Rackspace	Rain Yun/雨云	RcodeZero	reg.ru
Regfish	RFC2136	RimuHosting	RU CENTER
Sakura Cloud	Scaleway	Selectel	Selectel v2
SelfHost.(de\|eu)	Servercow	Shellrent	Simply.com
Sonic	Spaceship	Stackpath	Syse
Technitium	Tencent Cloud DNS	Tencent EdgeOne	Timeweb Cloud
TodayNIC/时代互联	TransIP	UKFast SafeDNS	Ultradns
United-Domains	Variomedia	VegaDNS	Vercel
Versio.[nl\|eu\|uk]	VinylDNS	Virtualname	VK Cloud
Volcano Engine/火山引擎	Vscale	Vultr	webnames.ca
webnames.ru	Websupport	WEDOS	West.cn/西部数码
Yandex 360	Yandex Cloud	Yandex PDD	Zone.ee
ZoneEdit	Zonomi