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An authorization library that supports access control models
...Currently, dozens of databases are supported, from MySQL, Postgres, Oracle to MongoDB, Redis, Cassandra, AWS S3. jCasbin is a powerful and efficient open-source access control library for Javaprojects. It provides support for enforcing authorization based on various access control models.
...Joblets guarantee productivity through reusability.
The framework is engineered in a multi-layered architecture on top on some of the most recognized open source projects of the global java community; consequently a steep learning curve and an open architecture for binding with other projects are ensured.
The MACA objective is to provide user authentication, session management and authorization services independently of platform. Authorization servive is based on a contextual role-based access control model that extends NIST RBAC