PUBLIC MARKS from sbrothier with tag synchronisation

Insync began as a side project and in 2008 became a full blown sync + share product. We wanted to sync and share files without resorting to web uploads, FTP clients, network shares, attachments and SharePoint. Insync is built with Google Apps love and supports enterprises with 2 to 500+ employees. Our goal is to continue to build a kick-ass product.

Soocial provides a one address book solution to contact management. It doesn't matter where you add or change a contact, it will be changed in your other connected devices or web applications.

Synchronize Google Calendar and Apple iCal. Share calendars between multiple Macs. Share calendars with your coworkers, family, and friends. And while you're at it, connect Google Calendar to your iPod, mobile phone, and other devices.

Google Browser Sync for Firefox is an extension that continuously synchronizes your browser settings – including bookmarks, history, persistent cookies, and saved passwords – across your computers. It also allows you to restore open tabs and windows across different machines and browser sessions

Watch your address book automatically update itself with their latest info.