Acegi
From low-art Gloominati
From the Acegi website:
The Acegi Security System for Spring provides authentication and authorization capabilities for Spring-powered projects, with optional integration with popular web containers. The security architecture was designed from the ground up using "The Spring Way" of development, which includes using bean contexts, interceptors and interface-driven programming. As a consequence, the Acegi Security System for Spring is useful out-of-the-box for those seeking to secure their Spring-based applications, and can be easily adapted to complex customized requirements.
Security involves two distinct operations, authentication and authorization. The former relates to resolving whether or not a caller is who they claim to be. Authorization on the other hand relates to determining whether or not an authenticated caller is permitted to perform a given operation.
