Best Let's Encrypt Alternatives in 2026
Updated
20 tools from certificate management software ranked against Let's Encrypt on the same published basis.
- 1Let's Encrypt vs Certify The Web
- 2Let's Encrypt vs KeyTalk CKMS
- 3Let's Encrypt vs Qualys External Attack Surface Management
- 4Let's Encrypt vs ManageEngine Key Manager Plus
- 5Let's Encrypt vs Certbot
- 6Let's Encrypt vs Entrust Certificate Manager
- 7Let's Encrypt vs Keyfactor Platform
- 8Let's Encrypt vs Oracle Cloud Infrastructure Secret Management
- 9Let's Encrypt vs Sectigo Certificate Manager
- 10Let's Encrypt vs AWS Certificate Manager
- 11Let's Encrypt vs DigiCert Trust Lifecycle Manager
- 12Let's Encrypt vs SSL.com Certificate Lifecycle Management
- 13Let's Encrypt vs GlobalSign Atlas
- 14Let's Encrypt vs Certynx
- 15Let's Encrypt vs Google Cloud Certificate Manager
- 16Let's Encrypt vs Smallstep ZTNA
- 17Let's Encrypt vs Microsoft Cloud PKI
- 18Let's Encrypt vs acme.sh
- 19Let's Encrypt vs TigerTrust
- 20Let's Encrypt vs DigiCert ONE
Let's Encrypt alternatives compared
| # | Tool | Score | Free plan | From | Runs on |
|---|---|---|---|---|---|
| 1 | Certify The Web | 8.0 | Free plan | $4.92/mo | API, Linux, Mac, self-hosted, Web, Windows |
| 2 | KeyTalk CKMS | 7.5 | No | €5/mo | Android, iOS, Linux, Mac, self-hosted, Windows |
| 3 | Qualys External Attack Surface Management | 7.5 | No | — | API, Linux, Web |
| 4 | ManageEngine Key Manager Plus | 7.3 | No | $49.92/mo | API, Linux, self-hosted, Web, Windows |
| 5 | Certbot | 7.1 | Free plan | Free | Linux, Mac, self-hosted, Windows |
| 6 | Entrust Certificate Manager | 7.1 | No | — | Android, API, iOS, Linux, self-hosted, Web |
| 7 | Keyfactor Platform | 7.0 | No | — | API, self-hosted, Web |
| 8 | Oracle Cloud Infrastructure Secret Management | 7.0 | Free plan | Free | API, Web |
| 9 | Sectigo Certificate Manager | 6.8 | No | $20.83/mo | API, Web |
| 10 | AWS Certificate Manager | 6.7 | Free plan | Free | API, Web |
| 11 | DigiCert Trust Lifecycle Manager | 6.7 | No | $3.33/mo | API, Linux, Web, Windows |
| 12 | SSL.com Certificate Lifecycle Management | 6.6 | No | — | API, Web |
| 13 | GlobalSign Atlas | 6.5 | No | — | API, Web |
| 14 | Certynx | 6.4 | No | — | API, self-hosted, Web |
| 15 | Google Cloud Certificate Manager | 6.4 | No | — | API, Web |
| 16 | Smallstep ZTNA | 6.4 | No | — | iOS, Linux, Mac, Windows |
| 17 | Microsoft Cloud PKI | 6.3 | No | $2/mo | Android, iOS, Mac, Windows |
| 18 | acme.sh | 6.2 | No | — | Windows, Mac, Linux |
| 19 | TigerTrust | 6.2 | No | — | Web, Windows, Linux |
| 20 | DigiCert ONE | 6.0 | No | — | Web |
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Questions about Let's Encrypt alternatives
What is the best alternative to Let's Encrypt?
Certify The Web, number 1 in certificate management software with a score of 8.0 out of 10. The others here: KeyTalk CKMS, Qualys External Attack Surface Management, ManageEngine Key Manager Plus and 16 more.
What is the best free alternative to Let's Encrypt?
Certify The Web is the best-ranked alternative with a free plan. 4 of the 20 alternatives here publish a free plan on their own pricing pages.
How are these alternatives ranked?
Ranked on what each maker publishes, the fullest spec sheet first: how deeply the product is documented, the platforms it runs on, a free tier or trial to test it, and its standing.