Ajax Web-based Spreadsheet Widget in GPL License

dhtmlxSpreadsheet is an open source Ajax spreadsheet widget written in JavaScript and PHP. It allows you to quickly add an Excel-like, editable data table on a web page.

If you need to display some data in a table view and would like to put it on the web for sharing or further editing, you might consider using online spreadsheet services. However, what if you want to keep data on your own server? With dhtmlxSpreadsheet, you can store the data on your side and show it in a web-based spreadsheet in edit or readonly mode.

To facilitate the integration of dhtmlxSpreadsheet with CMS platforms, they offer ready-to-use plugins for Joomla!, WordPress, Drupal, and ModX. Use the plugins to add a great looking spreadsheet on your website and configure user rights for editing spreadsheet records.

Requirements: Javascript and PHP
Demo: http://www.dhtmlx.com/docs/products/dhtmlxSpreadsheet/
License: GPL License