Smallstep Certificates 1 likeA private certificate authority (X.509 & SSH) & ACME server for secure automated certificate management, so you can use TLS everywhere & SSO for SSH.Cost / LicenseFreeOpen Source (Apache-2.0)PlatformsSelf-HostedBest alternatives are xca - X Certificate and Key management11 alternatives
LabCA LikeA private Certificate Authority for internal (lab) use, based on the open source ACME Automated Certificate Management Environment implementation from Let's Encrypt (tm).Cost / LicenseFreeOpen Source Application typeCertificate AuthorityPlatformsSelf-HostedDockerDebianLinux+2Best alternatives are Let's Encrypt4 alternatives
Mox LikeMox is a modern full-featured open source secure mail server for low-maintenance self-hosted email.Cost / LicenseFreeOpen Source (MIT)Application typeMail ServerPlatformsSelf-HostedDocker+7Best alternatives are mailcow: dockerized19 alternatives
Lego (go-acme) LikeLet's Encrypt/ACME client and library written in Go.Cost / LicenseFreeOpen Source (MIT)PlatformsLinuxGo (Programming Language)Best alternatives are Let's EncryptandCertbot4 alternatives
