HooThemes

Animated search form with Pure CSS3, replace search form with custom CSS styles.

Search Box

Animated search form with Pure CSS3, replace search form with custom CSS styles.

Nandakrishnan

NK Search 
Simple WordPress Search Form with Auto Suggestions
Use Short-codes to render the search form in your website
[nks] 
[nks post_type=”post-type or post-types separated with comma”] 
[nks post_type=”post-type or post-types separated with comma” class=”custom-class”] 
[nks post_type=”post-type or post-types separated with comma” class=”custom-class” placeholder=”placeholder-text”] 
[nks post_type=”post-type or post-types separated with comma” class=”custom-class” placeholder=”placeholder-text” count=”posts-count”]
It supports 
1. Custom post types 
2. Custom classes 
3. Transients to cache frequent search results

NK Search – WP Simple Search with Auto Suggestion

Custom WordPress Search Field with Auto suggestion. It can be used for custom post types.

Search Box vs NK Search – WP Simple Search with Auto Suggestion