"If you’re like us, your knowledge is spread across several places: Gmail, Google Docs, Basecamp, and more. Redwood makes it easy to search across these sources, right from your desktop." Clever.

Rails plugin for intelligently searching within your application. Not a bad idea; will probably end up using this at some point.

"We’ve recently switched a number of projects to ThinkingSphinx here at Hashrocket. These projects were originally using SOLR or UltraSphinx. Today, we’ll explore the differences between UltraSphinx and ThinkingSphinx and why we chose to switch." Detailed explanation of the advantages of ThinkingSphinx over UltraSphinx or other alternatives.

Ooh - a decent search tool for cc'd Flickr images.

An interesting series of concept images of what context-aware, mobile search and data-diving tools might look like. Some neat thinking around transparency and context.

Wordpress, by default, only lets you search "posts". If you want to search both blogposts and static content, then this plugin is what you need. I'm very surprised this isn't an option out of the box.

"I wrote a "Grep in Project" command that combines the speed of grep with a decent, well-integrated UI." Oh wow. Just what I've needed.

This kind of thing always amuses me - clouding real data by making ghost-queries as background noise.

Nice - ferret support as a Rails plugin

Will probably be better to go with acts_as_ferret, but we'll see

Interesting approach to search and data structure; ram it all in one field, AI-based search finds what you mean. Could be an interesting model.