Lego

Let's Encrypt client and ACME library 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	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	Curanet	DanDomain
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	Exoscale	External program
F5 XC	freemyip.com	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	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	ScanNet
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	Wannafind	webnames.ca	webnames.ru
Websupport	WEDOS	West.cn/西部数码	Yandex 360
Yandex Cloud	Yandex PDD	Zone.ee	ZoneEdit
Zonomi