Similar to Ext Grid, but built on jQuery, Flexigrid is a feature rich data grid with resizable columns and a scrolling data to match the headers, plus an ability to connect to an xml based data source using AJAX to load the content.
Features of this jQuery data grid plugin:
Resizable columns
Resizable height
Sortable column headers
Cool theme
Can convert an ordinary table
Ability to connect to an ajax data source (XML only)
Paging
Show/hide columns
Accessible API
More..
Requirements: jQuery Compatibility: All Major Browsers
Smart Lists, a light-weight (8KB) Prototype-script.aculo.us framework extension, converts HTML lists into categorized, paginated lists. And, It does not require a database or server-side script.
It can be applied to existing lists with very little effort, providing a significant bump in usability.
Smart List is easily configurable with different hide/show effects for items and changing pages, speed of the effects and number of the items for paging.
Besides supporting all the major modern browsers, it degrades gracefully for unsupported browsers.
ProtoFlow is an open source content viewing application built with Prototype & script.aculo.us which functions similar to the famous iTunes Cover Flow.
You can browse through the content (it supports all the HTML elements) with mouse clicks or a JavaScript slider.
It is mentioned that the application may have more features in the future like auto-play and image reflection.
Sphinx is a standalone search engine application that can be integrated with your data sources to provide fast, size-efficient and relevant fulltext search functions.
To clear how powerful it is, Sphinx is already used in BlogCatalog, Joomla & phpBB community forums and more.
Sphinx currently supports:
MySQL
PostgreSQL
XML Pipe mechanism that allows indexing of XML data
Some features of Sphinx:
high indexing speed (up to 10 MB/sec on modern CPUs)
high search speed (avg query is under 0.1 sec on 2-4 GB text collections)
high scalability (up to 100 GB of text, upto 100 M documents on a single CPU)
supports distributed searching (since v.0.9.6)
supports phrase proximity ranking, providing good relevance
supports any number of document fields (weights can be changed on the fly)
supports different search modes ("match all", "match phrase" and "match any" as of v.0.9.5)