Having a built in search is extremely important for blogs with hundreds of archived posts. Even more important? Having a search box that’s displayed in an easy-to find post.There are a number of different wordpress Search plugins to use in your blog I collected a lot of them enjoy!
Google Search Plugins
Easily embed Google search results within your WordPress site, with the More from Google plugin.
Google Blog Search Preview is a simple plugin for WordPress which displays incoming links from Google Blog Search.
Adds a Google AJAX Search box on your site. Options include searching your site through Google Blog Search and/or straight up Google
Twitter Search Plugins
TwitterSearch allows users to keep track of twitter search terms from within their wordpress dashboard.
Displays the latest results based on a twitter search. Options include setting multiple search terms and limiting tweets shown.
Categories Search Plugins
Generates a drop-down list and a text box to allow your visitors to search for posts within specific categories.
Reconfigures search results to display results based off of category of posts.
Category Search adds the option to display category names in search results. Useful when you have a lot of categories.
Enhance wordpress search form to allow searching posts in certain category(s), month archive(s) or tag(s).
Gallery Search Plugins
NextGEN Gallery Search is a simple NextGEN addon that let you search within your galleries.
Other Search Plugins
Simplifies finding a guest blogger, searching for an interesting post and creating a guest account. Adding expert articles becomes real easy.
Get credit for your content. Whenever someone selects text on your site, your page title and URL will be included in the footer of the copied text.
Adds a Customizable Search Widget for WP-Ecommerce Products to give you more control over how the search box looks on your sidebar.
This Plugin allows you to quickly and easily include the useful features of the Q-Sensei Search Engine directly into your blog.
Advanced WordPress search with wildcards, highlighting, log, and ability to search all post data. Now with Lucene!
Adds “live search” functionality to your WordPress site. Uses the built-in search and jQuery.
Search Meter tracks what your readers are searching for on your blog. View full details of recent searches or stats for the last day, week or month.
Real Estate Search plugin enables you to use browse through listings using tag combinations.
Relevanssi replaces the default search with a partial-match search that sorts results by relevance. It also indexes comments and shortcode content.
Search API is a set of functions that allows developers to easily implement new search functionality for WordPress.
This plugin shows recent searches in a sidebar widget.
Increases WordPress’ default search functionality through an options panel. Options include search highlight, searching pages, excerpts, attachments.
This plugin allows multiple form inputs to be configured to search different aspects of a post including custom fields.
SearchEkko is a “related posts” widget that uses visitors’ search referral terms to find and present your best-matching posts.
Widget that displays on your WordPress search results page with similar items from your Flickr, YouTube, and Twitter feeds.
Put a Wowhead search box in your sidebar. Has configurable sizes and content.
Replace the default WordPress search with a contextual search. Search results are sorted by relevancy.
Sphinx Search is a plugin that uses the Search API plugin and Sphinx as a backend for searching.
A plugin to let visitors search through your blog with the Ubiquity-Firefox-Addon.
wpSearchMu is a very powerful search plugin for WordPress Mu. It is based on the open source search engine “Lucene” which means its fast and relevant.
Search Regex adds a powerful set of search and replace functions to WordPress that go beyond the standard searching capabilities, with full regex supp
Quick Search add AJAX Search to your site
This plugin allows your visitors to easily install the search bar of your site in their browser.
WP AutoSuggest adds the Auto Suggest support to the WordPress search.
Lightweight search terms highlighter when referer is a search engine or within wp search results using jQuery.
Display contextually related posts from your blog using the Searchles Discovery Platform.
Lets you add links to Amazon using a special markup. Also includes an optional widget to search Amazon and display results in your blog.
Adds a Customizable Search Widget to give you more control over how the search box looks on your sidebar.
This software replaces WordPress’s built-in search functionality with the Sphinx Search Engine, which gives high-performance, relevant search results.
The Searchles Discovery Widget is a wrapper that displayes the Searchles Discovery Widget in the sidebar of a WordPress Blog.
Add Viewzi Site Search to your Site.
Turns values saved in the Searchable Links box of each post into links that when clicked, search your site for that specific value.
Google Custom Search plugin for WordPress replaces the default search engine with Google’s Custom Search for websites.
Add OpenSearch discovery and querying to your WordPress site.
wpSearch is a very powerful search plugin for WordPress. It is based on the open source search engine “Lucene” which means its fast and relevant.
Includes LiveSearch in your blog. Now Widgetized.
Search Permalink redirects search form queries to cruft-free permalink URIs.
Adds a sidebar widget to search for song lyrics on the LyricWiki.org site.