HTML Table Editor
You can use this table editor to generate an HTML table.
Use the Table button (top-left of the editor) to generate an HTML table. Use the Source button to view the HTML code.
As you select an element, the element and its parent elements appear in the bottom bar. You can click on these to select that element.
Also see the HTML Table Generator and the Full HTML Editor.
For more information about the HTML code for generating tables, see HTML <table> Tag.
Also check out HTML Tables for various table-related resources.
About This HTML Editor
The above HTML editor is known as "CKEditor", which can be downloaded from the CKEditor website. It is distributed under the GPL, LGPL, and MPL open source licences.