Gemalto SafeNet KeySecure - Gemalto SafeNet KeySecure is a centralized cryptographic key management platform.
VAULT - A password manager for freelancers, developers, agencies, IT departments and teams. VAULT safely stores account information and makes it easy to share between co-workers, other team members and clients.
KeyNexus - KeyNexus is a cloud-based encryption-key storage and provisioning service purpose-built for developers of cloud-based applications.
Vault by HashiCorp - Tool for managing secrets
Dogtag PKI - The Dogtag Certificate System is an enterprise-class open source Certificate Authority (CA).
EJBCA - EJBCA® is a PKI Certificate Authority software, built using Java (JEE) technology.