Salesforce.com
(Contact)
Salesforce.com is a very popular cloud based CRM.
Twilio
(SMS Message)
Twilio is a telephony service, allowing you to make and receive phone calls, as well as send and receive SMS messages.
Use FoxWeave to easily Send an SMS via Twilio on new Contact in Saleforce.
Cloudant DB

FreshBooks

Google Forms

Google Mail

HTTP

MailChimp

MongoHQ DB

MySQL DB

Oracle DB

OnePageCRM

PostgresSQL DB

Salesforce.com

Sendgrid

MS SQL Server DB

Webhooks

Wufoo

Twilio

Twitter

Zendesk