In reply to Carl Hancock.

For anyone curious I can sum up the WordPress.org free plugin space...

- JetPack Forms will be #1 in terms of overall marketshare.
- Contact Form 7 will be #2.

After those 2 there are a wide variety of free plugins to download in the repository, all with quite similar marketshare.

- Ninja Forms
- Formidable
- Smart Forms
- Optin Forms
- X-Forms

Multiple pages worth of form plugins in the repository.

None of whom's analytics are useful to us (as in my company) from a business standpoint.