OnePageCRM
(Contact)
OnePageCRM is a super easy online sales CRM for small business.
Salesforce.com
(Contact)
Salesforce.com is a very popular cloud based CRM.
Use FoxWeave to easily Migrate Contacts in OnePageCRM to Contacts in Salesforce.com

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