Hiver - Manage Customer Support, Sales and Projects right from your Gmail inbox. Collaborate with Shared Labels, Shared Contacts, email notes, email reminders and email templates
Invision - Prototyping and collaboration for design teams
Clean Email - Clean Email is an online service that empowers you to take control of your mailbox.
Marvel - Turn sketches, mockups and designs into web, iPhone, iOS, Android and Apple Watch app prototypes.
Nylas Mail - The Nylas Cloud API powers your application with email, calendar & contacts features. Built-in features for better email, calendar, and contact management.
UXpin - Design is really about solving problems. UXPin is the UX Design Platform that gets that right.