Yes, both SugarSync and Dropbox Professional offer a Free Trial.
SugarSync is designed for Large Enterprises, Medium Business and Small Business.
Dropbox Professional is designed for and undefined.
Pricing for SugarSync Starts at $7.49/Month whereas for Dropbox Professional Starts at $9.99/Month when Billed Yearly.
Some top alternatives to SugarSync includes Odrive, Sync.com, Dropbox Business, Google Drive, FileCloud, Microsoft OneDrive for Business, Dropbox Professional, BluSync, OpenDrive and Resilio Sync Business.
Some top alternatives to Dropbox Professional includes CollaborateCloud, CloudFiles, Dropbox Business, FileCloud, ownCloud, MyDocsOnline, FilesAnywhere, DocUp, etfile and Dropbox Paper.