Simple Contacts - Contact lens prescriptions from home
FullContact Card Reader - Automagically scan biz cards into LinkedIn/Gmail contacts
Google Contacts - Google Contacts is Google's contact management tool that is available in its free email service Gmail, as a standalone service, and as a part of Google's business-oriented suite of web apps Google Apps.
Webby - Webby allows to use Facebook, Youtube or any web app as a regular desktop apps, integrated with the...
ŌURA Ring - Advanced sleep and fitness tracker
Kontact - Kontact is the integrated Personal Information Manager of KDE.