FullContact Card Reader - Automagically scan biz cards into LinkedIn/Gmail contacts
Fluid - Turn Your Favorite Web Apps into Real Mac Apps.
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.
WebCatalog - Run your favorite web apps natively
Nextcloud Contacts - The Nextcloud contacts app is a user interface for Nextcloud's CardDAV server.
ToDesktop - Convert your web app to a desktop app in 2 minutes.