The WordPress SEO plugin is, quite simply, the best SEO plugin available for WordPress. If you use this plugin, you will probably not need any other SEO plugins. The author, Yoast (a.k.a. Joost de Valk) is a highly respected WordPress and SEO expert, and his plugin gives you the tools necessary to effectively optimize your WordPress website.
Gravity Forms is a premium plugin for form management. Essentially, it allows you to create forms and insert them in your pages, posts, or sidebar. You can have a variety of form fields, from text boxes to drop-downs to upload buttons. The results are stored in WordPress, and optionally mailed to you and/or the email address listed in the form.
We are pleased to include the Gravity Forms plugin on our platform, at no additional cost. Normally, it costs $39/year to use this plugin on one website, but our developer license allows us to provide this to all of our customers.