Some of the features are: - search results identical to what you get at Google - enables you to improvise search result display, if you like to.
License: Artistic License, GNU General Public License (GPL)
Operating System: Windows, Linux, BSD
OpenSearchServer is built on Lucene and written in Java and it can be integrated into almost any kind of application without the need to produce Java code.
Developer: Jaeksoft SarL
License: GNU General Public License version 3.0 (GPLv3)
Operating System: Macintosh, Linux, Windows
It's free, with no spyware or viruses, does not open pop-ups or hijack your searches, and no personal information is required.
Operating System: Windows, Linux