Alternatives to ManageEngine Key Manager Plus

EJBCA

EJBCA suits organizations managing internal PKIs or securing industrial, IoT, DevOps, or national eID environments.

KeyTalk CKMS

CKMS suits businesses managing digital certificates and keys, including managed service providers serving customers.

Let’s Encrypt suits people and organizations worldwide that need certificates for domain-named web, mail, or FTP servers.

lego

lego suits developers and operators who need to automate certificate issuance, renewal, or revocation through ACME.

It suits users who want shell-based ACME certificate issuance and automatic renewal on supported systems.

GeoTrust

Horizon is aimed at small and medium businesses and fast-moving builders needing certificate services or server vulnerability scans.

Certbot suits command-line-comfortable administrators who manage websites on dedicated servers, VPS instances or cloud-hosted servers.

cert-manager

cert-manager suits teams running Kubernetes or OpenShift workloads that need managed certificates for public-facing or internal services.

Keyfactor Platform

It suits PKI, security, infrastructure, and DevOps teams that need certificate visibility, lifecycle controls, and automation across environments.

AWS Certificate Manager

ACM suits teams securing websites, applications and communications among servers, mobile devices, IoT devices and applications.

It suits organizations that need to discover and manage certificates across varied environments and certificate authorities.

ServiceNow Event Management

It suits teams managing infrastructure events, service health, and alert workflows across varied monitoring sources.

It suits system administrators, IT operations staff, PKI operators, developers, and integration engineers managing professional PKI environments.

It suits organizations that already use a CLM platform or custom certificate workflow.