PubSub (from publish and subscribe) is a web search engine that matches your “standing queries” against new or updated web pages as it discovers them. This is in contrast to most other search engines that match your “ad hoc query” against all of the content it had previously discovered and indexed. PubSub’s forte is rapid searching over dynamic content — such as blog entries or newsgroup posting. In fact, all of it’s content is currently categories into one of five categories: blogs, newsgroups, press releases, SEC/EDGAR filings, and airport delays. You get the results of your PubSub subscriptions by visiting their site, via RSS or ATOM, through a browser plugin or by using their API in your own code.

PubSub’s LinksRanks feature lets you explore a total ranking of their sources (based on the number of in-links, see the details) and also the 30 day trend of any site.

PubSys is free and it’s not clear what their business model is. It is based in NYC and lead by CTO and co-founder is Bob Wyman. It is a very interesting system that is a good complement to traditional web search engines (traditional in the sense of Internet years).

Categories: GENERAL, , Related posts: • Grokker search engine;  • Building your own search engine with Alexa;  • Policy-controlled dynamic spectrum access;   Comments: none