SugarSync is a cloud platform that synchronises files between computers and mobile devices for backup, access, syncing and sharing. It supports Windows, macOS, Android and iOS. According to its app listing, SugarSync syncs several folders at once, backs up photos automatically, can remotely wipe data from a lost device, encrypts files in transit and in cloud storage, and lets you control permissions when sharing files and folders. With Protected Folders you can roll a folder back to an earlier date. SugarSync is a commercial service hosted by the vendor and is not open source.
SugarSync, Inc. is a US company. Its online backup, sync and sharing assets were acquired by j2 Global in 2015, and the App Store listing carries a copyright in the name of j2 Global, Inc. and affiliates. A US parent means that US legislation such as the CLOUD Act can apply to stored data. The sources consulted do not state where SugarSync stores data, so ask the vendor about this before using the service for European business data.