Jenkins - Jenkins is an open-source continuous integration server with 300+ plugins to support all kinds of software development
Boomerang for Outlook - Boomerang for Outlook offers email productivity tools to track, schedule and send mails at the right time.
Travis CI - Focus on writing code. Let Travis CI take care of running your tests and deploying your apps.
Covideo - Covideo is a Video Email Platform for Businesses that enables companies to communicate quickly and effectively with their customers.
CircleCI - CircleCI gives web developers powerful Continuous Integration and Deployment with easy setup and maintenance.
Outlook4Gmail - Outlook4Gmail provides easy synchronization of your Outlook and Google accounts