Ok, first review time and for a plug that I like more and more. I've always wanted to use rhythm guitar in my songs, but I can't play a note and haven't time to learn. Virtual Guitarist looked fun, but at the end of the day it's all samples - and I wanted more flexibility. Slayer was pretty close, but you could only strum downwards and its amp modelling was a little variable. I despaired, until...
... enter Revitar. A simple interface (that sadly looks nothing like a guitar) hides tremendous "tweakability" and a cracking string sound. You can mute, damp the strings, damp using your "palm", change the tone of the strings... and best of all, strum a wide range of easily from your keyboard. All of these controls can be manipulated via MIDI, so if you work at it you can achieve some very realistic rhythms.
All of this is great, BUT... the real killer is to use it with an amp sim. As I can't afford Amplitube, that means Green Machine or JCM9000. Now we're cooking. Lovely distorted rhythm to chug along with your tracks. Combine this with high quality lead and bass guitar samples, add a dose of drums and away you go - your very own VSTi band.
It's cheap, it's great to use and it's a lot of fun. Highly recommended.