Dev tools · alternatives · 2026
24 alternatives to Lego – A Let's Encrypt Library and CLI in Go
Let's Encrypt/ACME client and library written in Go - go-acme/lego
Lego is a Let's Encrypt and ACME client library and command-line tool written in Go. It enables developers to automate SSL/TLS certificate issuance and renewal through the ACME protocol. The tool can be used as both a… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Lego – A Let's Encrypt Library and CLI in Go launched in 2015; newer entries below may have overtaken it.
- 1
A tiny script to issue and renew TLS certs from Let's Encrypt - diafygi/acme-tiny
2015 · github.com · its alternatives →
- 2
:lock: acmetool, an automatic certificate acquisition tool for ACME (Let's Encrypt) - hlandau/acmetool
2015 · github.com · its alternatives →
- 3AR
From the cryptic terminal commands to the innumerable ways to shoot yourself in the foot, I always struggled to use TLS certificates. I love how much easier (and cheaper) Let's Encrypt made it to get certificates, but there are still plenty of things to struggle with. That's why we built Relay: a free, browser-based tool that streamlines the ACME workflow, especially for tricky setups like homelabs. Relay acts as a secure intermediary between your ACME client and public certificate authorities like Let's Encrypt. Some ways Relay provides a better experience: - really fast, streamlined…
2025 · anchor.dev · its alternatives →
- 4
Simplified PHP ACME client. Contribute to analogic/lescript development by creating an account on GitHub.
2015 · github.com · its alternatives →
- 5
Caddy is a powerful, enterprise-ready, open source web server with automatic HTTPS written in Go
2015 · caddyserver.com · its alternatives →
- 6
- 7
A SDK for access control policies: authorization for the microservice and IoT age. Inspired by AWS IAM policies. Written for Go. - ory/ladon
2017 · github.com · its alternatives →
- 8
Software sandbox for storage of sensitive information in memory. - awnumar/memguard
2017 · github.com · its alternatives →
- 9
Enc is a CLI tool for encryption, a modern and friendly alternative to GnuPG. It is easy to use, secure by default and can encrypt and decrypt files using password or encryption keys, manage and download keys, and sign data. Our goal was to make encryption available to all engineers without the need to learn a lot of new words, concepts, and commands. It is the most beginner-friendly CLI tool for encryption, and keeping it that way is our top priority.
2023 · github.com · its alternatives →
- 10
A fully manual Let's Encrypt/ACME client. Contribute to veeti/manuale development by creating an account on GitHub.
2016 · github.com · its alternatives →
- 11
Keygen is a powerful software licensing API for desktop apps, on-premise software and other software products written in Go, Rust, JS, C/C++, C#, Swift, Java, Kotlin and more.
2017 · keygen.sh · its alternatives →
- 12
🛡️ A private certificate authority (X.509 & SSH) & ACME server for secure automated certificate management, so you can use TLS everywhere & SSO for SSH. - smallstep/certificates
2019 · github.com · its alternatives →
- 13MB
2020 · packtpub.com · its alternatives →
- 14
A generator library for concise, unambiguous and URL-safe UUIDs - lithammer/shortuuid
2015 · github.com · its alternatives →
- 15FS
Free SSL certificates issued in less than a minute, for one or multiple domains, supporting wildcards and ACME with tutorials.
2015 · sslforfree.com · its alternatives →
- 16OS
2015 · hacktunnel.com · its alternatives →
- 17
Automatic HTTPS for any Go program: fully-managed TLS certificate issuance and renewal - caddyserver/certmagic
2018 · github.com · its alternatives →
- 18
2016 · github.com · its alternatives →
- 19
TLDR, Let's Seal gives the finger to Adobe and every doc signing tool (docusign, google, etc) who pay to play with the Adobe Approved Trust List and then charge you for something that should be free. Currently even the person checking if a document/contract is sealed or code is authentic has to also be inside the same Adobe walled garden too. Verification, the part that should be free is the part everyone charges for. Thats the shape Let's Encrypt fixed for TLS, and I wanted the same thing for documents and files. The core idea therefore needed to go a bit beyond e signatures and i…
Jul 2026 · github.com · its alternatives →
- 20GP
2021 · go-playground-wasm.vercel.app · its alternatives →
- 21
A sensible secret management toolkit (and Go library) for admins and programmers - domodwyer/cryptic
2016 · github.com · its alternatives →
- 22
- 23
:lock: Simple zero-config SSL reverse proxy with real autogenerated certificates (LetsEncrypt, self-signed, provided) - suyashkumar/ssl-proxy
2018 · github.com · its alternatives →
- 24IR
Back in 2012 I built https://cert-depot.com as a weekend project. Node.js + Express + jQuery, shelling out to OpenSSL for certificate generation. It worked but I eventually let it rot. https://news.ycombinator.com/item?id=4766743 Rewrote it from scratch in Go. The entire thing is a single binary with no external dependencies: 1. Certificate generation uses Go's crypto/x509 (no OpenSSL) 2. Certificates are generated in memory and streamed directly — nothing is stored on the server 3. RSA 2048/4096 and ECDSA P-256/P-384 4. Subject Alternative Names…
Apr 2026 · its alternatives →
Also compare
- Acme-tiny, a tiny 200-line Let's Encrypt client alternatives
- ACME Let's Encrypt client – binary releases, works like 'make' alternatives
- Anchor Relay – A faster, easier way to get Let's Encrypt certificates alternatives
- Lescript – Simple PHP client library for Let's encrypt alternatives
- Caddy, a cross-platform HTTP/2 web server alternatives
- TinyCert alternatives
Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →