compare
cert-manager vs win-acme
The same facts for both, read from GitHub every night, and the relation a person reviewed.
| Fact | cert-manager | win-acme |
|---|---|---|
| Language | Go | C# |
| Licence | Apache-2.0 | Apache-2.0 |
| Stars | 14k | 5.8k |
| Latest | v1.21.2 | v2.2.9.1701 |
| Last push | 2026-10-18 | 2026-06-09 |
| Release cadence | about 21 days between releases | about 25 days between releases |
| Active contributors | 30 commit authors on the default branch in the last 90 days | 0 commit authors on the default branch in the last 90 days |
| Flags | none | none |
How they relate
Both replace Certbot. Alternatives to Certbot →
Partialcert-managerIssues and renews ACME certificates for Kubernetes ingresses and services only.
Partialwin-acmeACME client for Windows that installs certificates into IIS and the Windows certificate store.
cert-manager
- v1.20.42026-09-16cert-manager is the easiest way to automatically manage certificates in Kubernetes and OpenShift clusters.
- v1.21.22026-09-11cert-manager is the easiest way to automatically manage certificates in Kubernetes and OpenShift clusters.
- v1.21.12026-07-29cert-manager is the easiest way to automatically manage certificates in Kubernetes and OpenShift clusters.
- v1.21.02026-07-08cert-manager is the easiest way to automatically manage certificates in Kubernetes and OpenShift clusters.
- v1.21.0-beta.02026-07-01> [!NOTE]pre-release
win-acme
- v2.2.9.17012024-05-25v2.2.9.1
- v2.2.9.16802024-05-16v2.2.9pre-release
- v2.2.8.16352024-02-27v2.2.8
- v2.2.7.16212024-02-02v2.2.7.1
- v2.2.7.16122024-01-23v2.2.7
cert-manager
✓ signed The latest release, v1.21.2, carries a signature GitHub verified.
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win-acme
✓ signed The latest release, v2.2.9.1701, carries a signature GitHub verified.
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