Even if you aren't using XSLT on your sites, you've probably considered using RSS feeds to keep your visitors informed. The ability to quickly preview RSS and convert to HTML is one of the options you get with this XSL transformations plugin.
The creation of picture albums by hand can be tedious. This plugin makes it easier to generate tables with images, and other blocks of custom tags that have to be repeated for each file.
Need to convert blocks of text or HTML to htp.p() statements? This plugin makes it easier to create htp.p lines and convert them back to text / HTML. It also provides options for commenting / uncommenting lines and inserting related tags.
Jump start MySQL database development in PHP with 45+ readymade code snippets, various versions of SQL statements, MySQL functions and other related code.
Virtually all major server-side scripting languages provide SQL-based functions for manipulating databases. The menus installed by this plugin can be used as a quick reference when they're not being used to insert SQL code snippets.