Simple Document Indexing System for Humans: C++ version

 SWISH++ is a Unix-based file indexing and searching engine
 (typically used to index and search files on web sites). It
 was based on SWISH-E although SWISH++ is a complete rewrite.
 .
 SWISH++ features:
   * Lightning-fast indexing
   * Indexes META elements, ALT, and other attributes
   * Selectively not index text within HTML or XHTML elements
   * Intelligently index mail and news files
   * Index Unix manual page files
   * Apply filters to files on-the-fly prior to indexing
   * Index non-text files such as Microsoft Office documents
   * Modular indexing architecture
   * Index new files incrementally
   * Index remote web sites
   * Handles large collections of files
   * Lightning-fast searching
   * Optional word stemming (suffix stripping)
   * Ability to run as a search server
   * Easy-to-parse results format