grsync Alternatives for Mac OS X

FreeFileSync is a free and open-source file synchronization and backup software for Windows, Linux, and macOS. It helps users compare and synchronize files and folders efficiently, supporting various storage locations including local drives, network shares, SFTP, and cloud storage.

Duplicati is a robust, free, and open-source backup client that securely stores encrypted, compressed, and incrementally updated backups on various cloud storage services, remote servers, or local drives. It's designed for both technical users and those who prefer a guided configuration.

GoodSync is a powerful and reliable file synchronization and backup software that automates data transfer and protection. It allows users to sync files between various devices, cloud storage, and FTP/SFTP servers, ensuring data consistency and availability across multiple locations.

Synkron is a multi-platform folder synchronization and backup application designed to help users keep multiple directories in sync across various locations, including local drives, FTP servers, and Amazon S3. It offers features like multi-way sync, scheduling, and file filtering.

Unison is a robust, open-source file synchronization tool for macOS, Unix, and Windows. It enables reliable bidirectional synchronization between two replicas of files and directories across different hosts or disks, ensuring both locations are kept up-to-date with changes.

DirSync Pro is an open-source, cross-platform file synchronization and backup utility designed for Windows, Linux, macOS, and other Java-supported operating systems. It offers robust features for managing backups, synchronizing folders, and performing incremental or mirror backups with options for encryption and scheduling.