Rainmaker - Rainmaker allows you to make your Google Contacts better.
Outlook4Gmail - Outlook4Gmail provides easy synchronization of your Outlook and Google accounts
Stripe - Online payment processing for internet businesses. Stripe is a suite of payment APIs that powers commerce for online businesses of all sizes. Use Stripe’s payment platform to accept and process payments online for easy-to-use commerce solutions.
Boomerang for Outlook - Boomerang for Outlook offers email productivity tools to track, schedule and send mails at the right time.
dip - accountability groups for developers
BlueMail - BlueMail is an email management app for Android, iOS, and Windows.