PieSync

Piesync syncs your data both ways between apps. So once you join a few apps together through it, it will sync your contacts and bits every 5 minutes. A great example is syncing your CRM to your Accounting Software and Email Marketing Software. Highly recommended for any business!

Zapier

Connect your apps and automate workflows

IFTTT

"If This, Then That!" now IFTTT. A great and in most cases free syncing platform. It has A LOT of applets