Scripts can be run interactively in a terminal, in the background, or via Locale. Python, Perl, JRuby, Lua, BeanShell, JavaScript, Tcl, and shell are currently supported, and we're planning to add more.
Subfeedr is an open PubSubHubbub hub implementation that also does periodically polling feeds so anyone can subscribe to any feeds that are not PubSubHubbub publishers.
When I'm on Windows, I use Strawberry - Perl Larry Wall
Download videos from various Flash-based video hosting sites, without having to use the Flash player.