OpenFaces is an open-source JSF component library developed by TeamDev. It provides a set of UI components that can be used in JavaServer Faces (JSF) applications. OpenFaces aims to enhance the JSF framework with advanced UI components and improve the user experience of web applications.

Some of the features and components provided by OpenFaces include:

1. DataTable: A powerful table component with sorting, filtering, and pagination capabilities.
2. TreeTable: A component that allows displaying hierarchical data in a table format.
3. Calendar: A customizable calendar component for date selection.
4. PopupMenu: A versatile component for creating context menus.
5. DropDownSelect: An input component with autocompletion and dropdown suggestions.
6. Charts: Support for creating interactive charts and graphs.
7. Validation: Enhanced validation framework for JSF forms.

OpenFaces components are designed to be flexible and customizable, allowing developers to achieve highly interactive and responsive user interfaces. The library is compatible with JSF 2.0 and higher and can be integrated into both new and existing JSF applications.

OpenFaces also provides documentation, tutorials, and sample code to help developers get started with using the library. It is released under an Apache 2.0 open-source license, allowing for free and unrestricted use in both commercial and non-commercial projects.