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Austria
EU
Let's Encrypt AlternativesOnly apps categorised as Certificate Authorities
The best Certificate Authority alternative to Let's Encrypt is ZeroSSL, which is free. If that doesn't suit you, our users have ranked more than 25 alternatives to Let's Encrypt and eight of them are Certificate Authorities so hopefully you can find a suitable replacement. Other interesting Certificate Authority alternatives to Let's Encrypt are Buypass, DigiCert, LabCA and Cheap SSL Shop.
Alternatives list
15 ZeroSSL alternatives
Buypass is established as a major player in securing transactions with electronic IDs in Norway. We are a trusted European Certificate Authority (CA). Large public enterprises including the majority of the Norwegian health sector, municipal services and the Norwegian Police is...
26 DigiCert alternativesWildcard SSL Certificates & 2048 Bit Extended Validation EV SSL Certificate Authentication. Strong Secure Sockets Layer Https Encryption for Network Security.
A private Certificate Authority for internal (lab) use, based on the open source ACME Automated Certificate Management Environment implementation from Let's Encrypt (tm).
Cost / License
- Free
- Open Source
Application type
Platforms
- Self-Hosted
- Docker
- Debian
- Linux
+2
Cheap SSL Shop is globally and authorized reseller of trusted SSL certificate authorities namely: Comodo, Symantec, GeoTrust, RapidSSL, Thawte, and GlobalSign. Cheap SSL Shop offers various types of SSL certificates like Domain Validation, Organization Validation, Extended...
CAcert.org is a community-driven Certificate Authority that issues certificates to the public at large for free.
Guarantee online customer security with SSL certificates from GeoTrust. Purchase in bulk, manage multiple certificates & become your own Certificate Authority.
Actalis is a European certification authority that provides SSL/TLS certificates for websites and online services. It offers Domain Validation (DV), Organization Validation (OV) and Extended Validation (EV) certificates, plus ACME support for automated DV certificate issuance...
Canada
United States
This is a one of good Let's Encrypt alternative CA.
This CA provides unlimited free TLS/SSL certificates through its ACME server, and these certificates have better compatibility than Let's Encrypt because they use COMODO/Sectigo as their root CA.
The downside is that their ACME server is quite unstable. Occasionally, when attempting to issue or renew certificates through their ACME server, random errors occur, sometimes with a 405 error despite no credential issues, or even a 5xx error.
Subscribing to a paid plan will not solve the problem as long as you are still using the same ACME server. You may want to try using their REST API instead, which has different server, limitations for each plan and may be their REST API server are slightly more reliable.