The following is a partial translation of the GitHub README.md.
About CollectiveAccess
CollectiveAccess is a web-based application suite that provides a framework for managing, describing, and discovering complex digital and physical collections in museum, archive, and research contexts. It consists of two applications. Providence is the “back-end” cataloging component of CollectiveAccess. It is highly configurable and supports a wide range of metadata standards, data types, and media formats. Pawtucket2 is CollectiveAccess’s general-purpose public-access publishing tool. It provides an easy way to create websites around data managed in Providence. (For more information on Pawtucket2, see https://github.com/collectiveaccess/pawtucket2.)
CollectiveAccess is freely available under the open-source GNU Public License version 3.