ACS AEM Commons is a project being undertaken within Adobe Consulting Services to consolidate and package our reusable code for the AEM platform. It is designed easy to integrate into your existing project and all features are provided on an opt-in basis. It has no required external dependencies. While this project is primarily produced and distributed within Adobe Consulting Services, it is available for usage by other Adobe groups, customers and partners. Contributions and feature suggestions from those groups are also most welcome. More information about this project, including detailed information about the included features, can be found at http://adobe-consulting-services.github.io/acs-aem-commons/
NOTE: This is likely the last version of ACS AEM Commons which will work on CQ 5.6.0. Starting with the next release, 5.6.1 will be the minimum supported platform.