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BOSS (Build your Own Search Service) is Yahoo!'s open search web services platform. The goal of BOSS is simple: to foster innovation in the search industry. Developers, start-ups, and large Internet companies can use BOSS to build and launch web-scale search products that utilize the entire Yahoo! Search index. BOSS gives you access to Yahoo!'s investments in crawling and indexing, ranking and relevancy algorithms, and powerful infrastructure. By combining your unique assets and ideas with our search technology assets, BOSS is a platform for the next generation of search innovation, serving hundreds of millions of users across the Web.

SenseBot (www.sensebot.net) represents a new type of Search Engine that delivers a summary in response to your search query instead of a collection of links to Web pages. SenseBot parses top results returned by a major Web search engine (e.g., Google) and prepares a text summary of them. The summary serves as a digest on the topic of your query, blending together the most significant and relevant aspects of the search results. The summary itself becomes the main result of your search.

Want to create your own semantic search engine, but just don't have the PhDs? Semantic search engine Hakia is opening up APIs to let anyone build their own semantic search application on top of its technology. Hakia looks at the meaning of Web pages and matches search queries using its own quality index of trusted, relevant sites.

The Flamenco search interface framework has the primary design goal of allowing users to move through large information spaces in a flexible manner without feeling lost. A key property of the interface is the explicit exposure of category metadata, to guide the user toward possible choices, and to organize the results of keyword searches. The interface uses hierarchical faceted metadata in a manner that allows users to both refine and expand the current query, while maintaining a consistent representation of the collection's structure. This use of metadata is integrated with free-text search, allowing the user to follow links, then add search terms, then follow more links, without interrupting the interaction flow.

The mistake is that semantic search engines present us with Google-like search box and allow us to enter free form queries. So we type the things that we are used to asking - primitive queries. It never occurs to us to type in What actor starred in both Pulp Fiction and Saturday Night Fever? or What two US Senators received donations from a foreign entity? We type simple questions, but this is not where the power of semantic search lies. Lets look at the spectrum of semantic technologies from Google, to SearchMonkey, to Powerset, and Freebase to understand what is going on.

The semantic mapping of the English language is the key to making Natural Language Processing (NLP) effective. Cognition's unique Semantic Map, which it built over the past 24 years, is the most comprehensive and complete map of the English language available today. It can be used in support of the Semantic Web for semantic search, search tools, business analytics, machine translation, document search, context search, and much more.

Sphinx is a full-text search engine, distributed under GPL version 2. Commercial license is also available for embedded use. Generally, it's a standalone search engine, meant to provide fast, size-efficient and relevant fulltext search functions to other applications. Sphinx was specially designed to integrate well with SQL databases and scripting languages. Currently built-in data sources support fetching data either via direct connection to MySQL or PostgreSQL, or using XML pipe mechanism (a pipe to indexer in special XML-based format which Sphinx recognizes).

To begin using SemantiFind, you must go to www.google.com - the service won't work from iGoogle or your Google search box in your browser. After you enter your search term in the box as usual, you then are prompted to indicate the precise meaning of your term before starting your query. This is done through the use of a drop-down box where specific terms and their definitions display. For example, if you were searching for "Georgia," you would be presented with the option to select either the U.S. state or the former soviet republic.

MarkMail is a free service for searching mailing list archives, with huge advantages over traditional search engines. It is powered by MarkLogic Server: Each email is stored internally as an XML document, and accessed using XQuery. All searches, faceted navigation, analytic calculations, and HTML page renderings are performed by a small MarkLogic Server cluster running against millions of messages.

Sesat is an open sourced Search Middleware with federation capabilities and a built-in search portal framework. Sesat enables a single user query to be dispatched to multiple information sources. The result is analysed, weighted and presented to the user according to configurable business rules.

Real-time web search - which scours only the latest updates to services like Twitter - is currently generating quite a buzz because it can provide a glimpse of what people around the world are thinking or doing at any given moment. Interest in this kind of search is so great that, according to recent leaks, Google is considering buying Twitter.

When it comes to product searches, Yotify is very smart. It doesn't just look at keywords, but also lets you know what the current best price is and then lets you select a checkbox to have the service alert you if the price drops below a certain point. You can also optionally check to be alerted when there are new product reviews available. The shopping section features scouts for common searches like digital cameras and laptops, but the shortcuts section lets you create more specific searches for a keyword, like a product ID or model number. See http://www.readwriteweb.com/archives/stop_searching_the_web_let_yotify_do_it.php

SearchMonkey reuses structured data to improve search result display with benefits to both search users, developers, and publishers of web content.

Search and get life science PDFs right away at pubget.com

Silobreaker is a search and aggregation service for news and current affairs that looks at the data it finds like a person does. It recognizes things - companies, people, topics, places - and puts them in context. By filtering out the noise and building up a meaningful picture from the information that matters, Silobreaker enables its users to spend more time learning from the web, and less time searching it.

DynaQ stands for 'Dynamic Queries for document based, personal information spaces'. The goal of the project is to conceptualise and to develop a prototypical inquiry system to explore the personal information space, that supports the user with the help of the searching paradigm orienteering. The document-based, personal information space of the user constitutes by all documents on his computer. Included are documents of several file formats (e.g. *.pdf), but also the users emails. Also included are all available meta informations and existing semantic informations according to the documents. Users that are not aware of the scientific context of the project can just think of DynaQ as an desktop search engine.

We are witnessing the rise of a new kind of web: contextual. You might not have heard or thought about it much yet, but you are already using it today. Search remains the killer app on the web, but context is quickly become a viable contender. Why? Because context is what happens instead of search.

ARROWSMITH is interactive software that extends the power of a MEDLINE search. It operates on the output of a conventional search in a way that helps the user see new relationships and form and assess novel scientific hypotheses. It is based on the premise that information developed in one area of research can be of value in another without anyone being aware of the fact.

But I've never seen a service that brings social bookmarking and semantic search together the way AntStorm does. The service works on two major fronts: first, AntStorm allows you to upload your bookmarks, tag them, share them, and access them from any computer you choose, and second, AntStorm uses your tagged bookmarks to power a semantic search engine that will help you find new sites and services that match your interests.

iLeonardo is an impressive site for those interested in research. It's a social utility that connects people and their notebooks which are collections of information from the Web. iLeonardo combines search methodologies, social bookmarks and social networks to produce relevant search results and ranking determined by people - not bots or publishers.The name of the service is obviously an homage to the legendary renaissance man, Leonardo Da Vinci, who was famous for his notebook collection of research information, thoughts and ideas. ILeonardo and its notebook collection technology strives to help the Leonardo's of the digital age. see: http://mashable.com/2008/09/01/research-tools/