Certbot vs acme.sh
A detailed comparison to help you choose between Certbot and acme.sh.
Quick Verdict
4.2/5
Certbot
0 reviews
4.2/5
acme.sh
0 reviews
Both Certbot and acme.sh are equally rated at 4.2/5. Certbot is the official ACME client for Let's Encrypt certificates. Automates certificate issuance and renewal for Nginx, Apache, and standalone mode on Linux servers. Lightweight shell script that automates ACME certificate issuance and renewal across Let's Encrypt, ZeroSSL, Google Trust Services and more. Integrates with 100-170+ DNS providers (counts vary by source) without requiring root or external dependencies.
Certbot ACME client for Let's Encrypt automation | acme.sh Free ACME client for automated SSL/TLS certificate management | |
|---|---|---|
| Overview | ||
| Rating | 4.2 (0 reviews) | 4.2 (0 reviews) |
| Pricing model | free | free |
| Starting price | Free | Free |
| Best for | System administrators who want automated Let's Encrypt (or any ACME CA) certificate management on Linux servers | DevOps engineers and sysadmins automating free TLS certificates across many domains and DNS providers — especially wildcards, scripted fleets, and resource-constrained Unix environments where Python-based clients do not fit. |
| Features | ||
| IPv6 | ||
| DDoS protection | ||
| Automated backups | ||
| Snapshots | ||
| Managed option | ||
| Bare metal | ||
| GPU available | ||
| S3-compatible | ||
| Hourly billing | ||
| Free tier | ✓ | |
| Tags | ||
| Tags | free tieropen source | free tieropen source |
| Visit Certbot → | Visit acme.sh → | |
Certbot
Pros
- + Free, Apache 2.0, EFF-maintained — no paid tier or usage caps
- + Automates issuance, installation, and renewal for Apache, Nginx, HAProxy, Plesk, standalone, webroot
- + Wildcard certificates via DNS-01 with many first-party DNS provider plugins
- + Works with any ACME CA, not just Let's Encrypt
- + Interactive instruction generator makes correct setup reachable for non-specialists
Cons
- - Assumes root access on a traditional server; poor fit for containers and serverless
- - Renewal failures are silent unless you add monitoring and alerting
- - Config-parsing plugins can refuse complex setups, falling back to manual work
- - Certificates-only scope: no inventory, policy, or contractual support
acme.sh
Pros
- + Free GPLv3 tool with no runtime dependencies beyond a POSIX shell — runs on servers, routers, NAS boxes, and containers alike
- + Broadest DNS-01 provider coverage of any ACME client, plus DNS alias and stateless modes for awkward zones
- + Wildcard, SAN, RSA and ECDSA (default) certificates with HTTP-01, DNS-01 and TLS-ALPN-01 challenge support
- + Multi-CA support (Let's Encrypt, ZeroSSL default, Google Trust Services, SSL.com, Actalis) with a single --server flag
- + Self-installing daily renewal cron and deploy hooks with service reload commands — automation once configured
Cons
- - No support contract, no SLA, and community-only help (wiki, GitHub issues, Gitter) when renewals break
- - Learning curve beyond the basic case: shell flags, environment credentials, DNS propagation behavior
- - DNS API tokens stored on the renewing host are a standing credential — scoping and protecting them is on you
- - GPLv3 copyleft complicates embedding in closed commercial products
- - High maintainer concentration and the curl|sh install idiom warrant release pinning and verification in production
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