The MailChimp plugin allows you to quickly and easily add a signup form for your MailChimp list.
Adds a WordPress widget that allows your users to sign up for your MailChimp mailing list.
Integrate forum registration with MailChimp list subscription
Easily add an email signup button to your Tumblr pages
API integration, list synchronization, subscription forms, campaign creation, and sending site emails via Mandrill.
joomlamailer is a full API integration for Joomla 1.5 & 1.6. Manage almost all aspects of your MailChimp campaigns.
Sync your WordPress user user data with your MailChimp mailing list. Create campaigns from blog posts.
Sign your WordPress visitors up for multiple MailChimp lists.
Chimp Your Joomla! is a plugin that automatically adds users to your account during registration.
Allow users to subscribe to your MailChimp lists when they submit the Contact form.
Seamlessly integrates the WordPress Registration and Comment forms with MailChimp
The most popular premium plugin site on the web.
Easily create a custom Coming Soon Page in minutes that will help your Website Launch become a Success.
Email Marketing Framework supports multiple lists and synchronization.
WP MailChimp Plugin allow to create unlimited subscription forms using easy wizard.
wpMandrill sends emails that are generated by WordPress through Mandrill, a transactional email engine from MailChimp.
Easily add a MailChimp subscription option to your ExpressionEngine site.
Create Joomla! newsletter forms using the RSform!Pro - MailChimp Plugin.
Squarespace 6 forms integrate easily with MailChimp lists.
Integrate most powerful Bulletin Board (vBulletin) with Mailchimp
The YIKES, Inc. MailChimp extender allows you to easily add a MailChimp signup form to a page or post.
MailChimp subscribe boxes... Quickly. Create and publish a MailChimp subscribe box in 60 seconds using QuickChimp!
Create MailChimp campaigns with wordpress plugin.
Add Vitrue's MailChimp module and have Facebook fans sign up for your newsletter in seconds.
ExpressionEngine extension for the third party module Freeform that adds subscribers to MailChimp subscriber lists.