⚡ Executive Summary & Quick Facts
Authoritative Sourcelego is lego is an open-source project written in Go: Let's Encrypt/ACME client and library written in Go..
| Repository | go-acme/lego ↗ |
|---|---|
| Primary Category | acme |
| Language & Stack | Go |
| Software License | MIT |
| Community Traction | ★ 9.9K stars · ⑂ 1.2K forks · #1,357 globally |
| Maintenance | ● Active (Last commit: Oct 17, 2026) · 106 open issues |
| Target Audience | Developers and engineering teams building with Go, seeking reliable, tested, and actively maintained tooling for production workloads. |
Star History
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+249
STARS · LAST 30 DAYS
8
PER DAY
#190
MOST-STARRED Go
| Window | 7 days | 30 days | 90 days |
|---|---|---|---|
| Stars gained | +56 | +249 | +720 |
| Per day | 8 | 8 | 8 |
| Forks gained | +6 | +24 | +59 |
lego gained 249 stars in the last 30 days, about 8 a day, and now has 9.9K. It is about 11 years old and has averaged roughly 904 stars a year. It ranks #190 among Go repositories and #1,357 across all languages on GitHubRepo.
Trending Record
2
DAYS ON TRENDING
#5086
BEST RANK
Oct 18, 2026
FIRST APPEARANCE
Active
STATUS TODAY
lego has maintained a continuous presence across global trending indexes, peaking at #5086. Below is the 30-day activity profile:
💡 Overview
lego is an open-source project written in Go: Let's Encrypt/ACME client and library written in Go.
Engineered for speed, consistency, and developer ease, it solves common hurdles in acme, acme-client, certificate. It provides clear interfaces, comprehensive configuration options, and seamless integration with existing tools across the modern development stack.
⚡ Key Features
Optimized execution pipeline written in Go for predictable speed.
Zero-friction configuration with comprehensive sensible defaults out of the box.
Cross-platform runtime support across Linux, macOS, and Windows environments.
Strong typing and modular architecture designed for easy extension and maintainability.
Standardized CLI and API interfaces for smooth integration into CI/CD workflows.
Active community maintenance with regular dependency updates and security patches.
📥 Installation
$ go install github.com/go-acme/lego@latest⚙ System Requirements
Platforms
- • macOS
- • Linux
- • Windows
Runtime & Dependencies
Go >= 1.21 runtime environment
Architecture
x86_64, ARM64 (Apple Silicon & Graviton)
🧠 How It Works
lego coordinates its core functionality through a modular Go pipeline. It parses configuration parameters, validates inputs, and resolves dependencies asynchronously. By minimizing runtime overhead and keeping allocations localized, it delivers predictable performance in both local development environments and automated production workloads.
🎯 Production Use Cases
Command-Line Automation
Execute automated build, deployment, and maintenance tasks directly from the terminal.
CI/CD Workflow Integration
Run non-interactive validation checks in GitHub Actions, GitLab CI, or local pre-commit hooks.
Developer Environment Setup
Standardize local engineering workstations with single-binary utility commands.
Scripting & Pipeline Orchestration
Chain complex multi-stage scripts with reliable error reporting and exits.
🚀 Getting Started
Install lego using your package manager: `go install github.com/go-acme/lego@latest`
Initialize your project workspace or configuration file for lego.
Import lego into your codebase or invoke it directly from your terminal.
Execute your test suite or run `lego --help` to verify successful setup.
👍 Strengths
⚠️ Considerations
⇄ Alternatives & Direct Competitors
👥 Who Should Use This
Developers and engineering teams building with Go, seeking reliable, tested, and actively maintained tooling for production workloads.
🏆 Nearby in the Rankings
go-acme/lego is currently ranked #1,357 by stars across every repository tracked on GitHubRepo. These are adjacent projects:
| Rank | Repository | Language | Stars | Action |
|---|---|---|---|---|
| #1,352 | BYVoid/OpenCC | C++ | ★ 10K | Compare ↗ |
| #1,353 | Stellarium/stellarium | C++ | ★ 10K | Compare ↗ |
| #1,354 | ruby-grape/grape | Ruby | ★ 10K | Compare ↗ |
| #1,355 | wireshark/wireshark | C | ★ 10K | Compare ↗ |
| #1,356 | prometheus-operator/prometheus-operator | Go | ★ 10K | Compare ↗ |
| #1,357 | go-acme/lego This Project | Go | ★ 9.9K | |
| #1,357 | ValveSoftware/GameNetworkingSockets | C++ | ★ 9.9K | Compare ↗ |
| #1,357 | Companion-Inc/feynman | TypeScript | ★ 9.9K | Compare ↗ |
| #1,360 | embassy-rs/embassy | Rust | ★ 9.9K | Compare ↗ |
| #1,361 | hyperdxio/hyperdx | TypeScript | ★ 9.9K | Compare ↗ |
| #1,362 | pmndrs/drei | JavaScript | ★ 9.9K | Compare ↗ |
Frequently Asked Questions
What does lego do? +
Let's Encrypt/ACME client and library written in Go
What language is lego written in? +
The primary language is Go. Topics include: acme, acme-client, certificate, dns, letsencrypt.
Is lego actively maintained? +
Yes, the last recorded push was on Oct 17, 2026 with 106 open issues being tracked.
How many stars does lego have? +
lego has 9,949 stars and 1,181 forks on GitHub.
How does lego rank among GitHub repositories? +
With 9,949 stars, go-acme/lego is ranked #1,357 globally across all repositories tracked on GitHubRepo and #190 among Go projects.
What license is lego distributed under? +
The repository reports a MIT license. Always verify the repository LICENSE file for legal terms.
