Looking for a simple way to create chord progressions? J74 Progressive may be a solution.
J74 Progressive SE (Standalone Edition) is a desktop application for Mac and Windows specialized in chord progression making. The application can be used in combination with any Digital Audio Workstation (DAW) which supports standard MIDI and standard MIDI files import. J74 Progressive SE allows you to create chord progressions by use of composition techniques modelling (such as diatonic scale and chords exploration methods) as well as performance styles (arpeggio, humanized timing and dynamics). The tool is capable of producing extremely realistic chord progressions and arpeggios, delivered directly as MIDI files for use in your DAW projects.
For $10 US this is an excellent little app that can get you kick started if you are needing some inspiration.
More info can be found at http://fabriziopoce.com/progressive_se.html where you can download a free trial.