Advanced Forms for WordPress Websites Just Don't Get Any Easier than Gravity Forms. Gravity Forms is hands down the best contact form plugin for WordPress powered websites. Gravity Forms Add-Ons: ActiveCampaign v1.3.1 | Agile CRM v1.1 | Agile CRM v1.0.2 | Authorize.Net v2.1.1 | AWeber v2.3 | Batchbook v1.0.1 | Campaign Monitor v3.4.1 | Campfire v1.0 | Capsule CRM v1.0.2 | CleverReach v1.1 | Coupons v2.2 | Dropbox v1.1.1 | Emma v1.1 | FreshBooks v2.2.3 | GetResponse v1.0.3 | Help Scout v1.3 | Highrise v1.0.1 | HipChat v1.0 | iContact v1.0.3 | Mad Mimi v1.0.2 | MailChimp v3.7.1 | PayPal Standard v2.6 | PayPal Payments Pro v1.8.2 | PayPal Pro v1.6.1 | Polls v2.4 | Quiz v2.4.1 | Signature v2.4 | Slack v1.3.1 | Stripe v2.0 | Survey v2.6 | Twilio v2.1.2 | User Registration v3.1 | Zapier v1.8 | Zoho CRM v1.1.1