Secrets management software
Aletheia (manage secrets in Google Cloud Platform)
Aletheia is a project to manage secrets in Google Cloud with CloudKMS and Cloud Storage. It can be used to store sensitive data like authentication details.
pick (password manager)
The pick tool provides a minimal password manager on the terminal for systems running macOS and Linux.
Vault (storage of secrets)
Vault is a tool created by HashiCorp to store secrets like keys and passwords. These secrets are typically used by other software components and scripts.