All essential modules are between Google Apps / GMail and Sugar.
Product is completely server side
Hosted CRM Friendly
Works with hosted CRM versions
OnDemand CRM Friendly
GrinMark synchronizer may be used with cloud editon of Sugar.
OnPremises - You install it locally
Enable GMail Sync for Sugar OnDemand and Sugar behind a firewall
Proven Sync Technology
Agile GrinMark Synchornizer is here for 5 years. The same engine used for synchronizing to Google Apps, MS Exchange, Office 365.