iPhone Apps to 2 Way Sync

Google Sync was a free service offered by Google to synchronize mail, contacts, and calendar data across multiple devices and platforms. It leveraged various protocols like Exchange ActiveSync, CardDAV, and CalDAV to push updates in real-time, ensuring users had consistent information wherever they accessed it.

Syncplicity is a robust file synchronization and sharing platform designed for businesses, offering secure cloud storage, collaborative tools, and granular control over data.