HashiCorp Vault is a source-available tool for secrets management, encryption as a service, and privileged access management, designed to handle multiple backends and provide secure secret storage in dynamic environments. Akeyless, on the other hand, is a cybersecurity platform offering secrets management and zero-trust access solutions, while Infisical is a robust infrastructure security platform designed for the secure management and automation of secrets like API keys, passwords, certificates, and access tokens. The three platforms differ significantly in their approaches, features, and suitability for different organizational needs, with HashiCorp Vault being self-hosted and more advanced, Akeyless available as a managed Cloud-based solution, and Infisical offering both cloud-managed and self-hosted options. Each platform has its strengths and weaknesses, and the choice between them often depends on specific organizational needs, infrastructure setup, and personal preference.