As of January, 2012, this site is no longer being updated, due to work and health issues

Search Tools Product Report

Amberfish

Product Information

Platform: Linux/Intel and Solaris, later FreeBSD, Mac OS X
Price: open source, free under the GNU GPL license, consulting available.

• Available as toolkit code library
• Efficient indexing
• High performance search engine.
• Queries on multiply-nested fields.
• Cross-database searching
• Z39.50 interface (partial).
• XML text search engine, for both free text and structured queries
• Supports phrase and Boolean searching
• Partially implemented
  • Template-based CGI search interface
  • C/C++ API
• Note: not much development on this since 2004