title: Looking for UI library for .NET and Mono
body: <p>I'm looking for a UI library for .NET and Mono, something like Gtk#, but with <strong>support for 64-bit (on Windows too)</strong>, and with some <strong>widget like WinForm's ListView, with <em>VirtualMode</em></strong>.</p>
  
  <p>I don't want to use WinForms and WPF. Is there any alternative?</p>
  
  <p>Thanks.</p>