This document introduces EclipseRT, a set of Eclipse projects focused on containers, middleware, and enterprise frameworks. These projects are all based on OSGi and share a modular philosophy and goal of realizing Eclipse's value at runtime. The presentation discusses how EclipseRT projects like Equinox, Jetty, and Virgo provide an OSGi-based infrastructure and how various companies and analysts are interested in OSGi and its potential to enable building customized application stacks.