XWiki Enterprise, a professional wiki that has powerful extensibility features such as scripting in pages, plugins, and a highly modular architecture, has reached version 5.4 Release Candidate.
The makers of XWiki have released another version in this new branch, marking the start of a new development cycle.
According to the changelog, the search facets now support multiple selection, the Advanced Search Options (i.e. the search filters) have been removed because they weren't visible enough, and the search input has been moved to the left.
Also, the File Type facet filters results are now based on the attachment file type, and the File Size facet lets you filter the results based on the size.
Remember that this is a development version and it should NOT be installed on production machines. It is intended for testing purposes only.