Andie Hunt

CiviCRM contribution pages allow you to generate a “widget” showing the progress toward a goal. This plugin makes it easy to include one or more contribution page “widgets” as actual WordPress widgets on your sidebar.
This plugin requires CiviCRM 4.3 or higher.
Read more at http://aghstrategies.com/civicontribute-widget

CiviCRM Contribution Page Widget

Displays contribution page widgets from CiviContribute as native WordPress widgets.

Jaap Jansma

aydun

alexreiner

This plugin adds integration for CiviCRM to Contact Form 7. With this plugin it is possible to submit a contact to a local or remote CiviCRM system.
This adds a CiviCRM tab to Contact Form confgurations. If you enable CiviCRM processing the form will be submitted to the CiviCRM API v3. For information about using CiviCRM’s API see https://docs.civicrm.org/dev/en/latest/api/
The API requires an Entity and an Action. You may need to add additional parameters depending for the Entity/Action you specify. Use the API Explorer on your CiviCRM system to determine what additional parameters are required. The form parameters will automatically be included in the API call and the form variables need to match those expected by the API. 
For example, if the API call needs a field called first_name then your form template should have a field called first_name (not first-name or firstName etc)

CiviCRM Contribution Page Widget vs Contact Form 7 CiviCRM integration