An open source search engine and crawler based on best open source technologies: lucene, zkoss, tomcat, poi, tagsoup. A stable, high-performance piece of software. It is a modern search engine and a suite of high-powered full text search algorithms. OpenSearchServer will allow you to create any kind of Search applications: Web search (internet, intranet, extranet), desktop and networked search, portable search for distributing CD/DVD. OpenSearchServer was developed in such a way that you can do all of these things as simply as possible. You will have full access to all of the components of our search engine. This is the most important feature that we wanted to offer you. It means that, instead of having to accept fixed parameters and options set by us, you will have total freedom to customize any parameters to perfectly match the needs of your application. You will never face a black box.