You could have downloaded Sideline 1.0 from our software library for free. Sideline lies within Internet & Network Tools, more precisely RSS Tools. The most popular version among the program users is 1.0. The program's installer is commonly called Sideline.exe. This free program was originally developed by Yahoo!.
From the developer:
Sideline is an Adobe® AIR™ desktop application built with the Yahoo! User Interface Library (YUI). It allows users to create and group custom queries by topics of interest. Sideline is an open source application released under the BSD license. The first beta release is out and the code is hosted on github.
You may want to check out more software, such as Sideline Video Analyzer, FFLM or Inwordz Deluxe, which might be similar to Sideline.