PUBLIC MARKS with tags search & dev

BOSS (Build your Own Search Service) is Yahoo!'s open search web services platform

The Semantic Web brings with it the opportunities for users to get smarter search results, and for site owners to get more targeted traffic as users find what they really want. But these benefits don't just magically appear. This article leads you through the aspects of both information architecture and general infrastructure you need in place to truly take advantage of this burgeoning opportunity.

Terrier is a highly flexible, efficient, effective, and robust search engine, readily deployable on large-scale collections of documents. Terrier implements state-of-the-art indexing and retrieval functionalities. Terrier provides an ideal platform for the rapid development of large-scale retrieval applications. The open source version of Terrier provides a comprehensive, flexible, robust, and transparent platform for research and experimentation in text retrieval. The research put into Terrier constantly expands towards new branches of the wider information retrieval field, making Terrier an ideal, strong, modular, and state-of-the-art platform for developing, assessing, and evaluating new concepts and ideas. Terrier is written in Java, and was used for Web and Enterprise search, Desktop, Intranet and Vertical search engines, as well as developing and evaluating novel large-scale text information retrieval techniques and applications.

Xapian is an Open Source Search Engine Library, released under the GPL. It's written in C , with bindings to allow use from Perl, Python, PHP, Java, Tcl, C#, and Ruby (so far!)

search tool for code and technical content

krugle makes it easy for developers to find source code and technical information

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java code search