Bastillion
Bastillion gives you a clean, browser-based way to manage SSH access a
...Highlights: centralized SSH key management (rotate/revoke access to every system instantly); two-factor authentication (Authy or Google Authenticator); every terminal session is recorded and can be replayed for audits (PCI DSS, HIPAA, SOC 2, ISO 27001); Profiles control who can reach which systems; Composite Scripts run the same script across a whole fleet; TLS/HTTPS out of the box with custom certificate support; optional LDAP authentication.
Ships as a single self-contained jar with an embedded H2 database. Free for up to 5 systems.