Squire adds a new UI to LoTRO. The current development version provides users with: + Web browser + Media Player + Notepad The web browser is great for keeping immersion while using quest guides or maps. For more details see http://lotro.imacoder.net/
It's pretty basic. It quite easy to use and works great! the web browser is pretty fast and the music player doesn't cause skipping or anything. I recommend this if you don't have another UI.