Akeyless Vault is described as 'End-to-end SaaS platform for secrets management and zero trust access for all use cases, across hybrid cloud, multi-cloud and legacy environments' and is an app in the network & admin category. There are nine alternatives to Akeyless Vault for a variety of platforms, including Self-Hosted, SaaS, Docker, Linux and Web-based apps. The best Akeyless Vault alternative is Vault by HashiCorp. It's not free, so if you're looking for a free alternative, you could try Vault by HashiCorp or Bitwarden Secrets Manager. Other great apps like Akeyless Vault are Rot, Infisical, AWS Secrets Manager and OpenBao.
HashiCorp Vault is not SaaS. Radically different implementation.