I will try to improve a Keyword suggestion plugin based on Google suggest and the wonder wheel
Here a little list with some plugins who will be interesting :
- Export custom graphics (where we can choose keyword and search motor to display on it) with different display (2D, 3D, chart, table)
- Website analyse : view the distance in clic between home page and the others, display internal link with anchor text, negative factors like title duplicate or broken links, density of each keywords, balise alt,
- Competitors analyse : find competitors with your keywords
- Find links : find the backlinks, find competitors backlinks
- Integration of google analytics