DirSync Pro 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.

Syncplicity is a robust file synchronization and sharing platform designed for businesses, offering secure cloud storage, collaborative tools, and granular control over data.

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.

Nomadesk provides secure file sharing, synchronization, and backup solutions, designed for businesses that need robust data protection and accessibility across devices. It functions as a virtual disk, ensuring files are always available and protected.

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.

OpenDrive provides a comprehensive online cloud storage solution with features for file synchronization, sharing, and backup. It supports WebDAV and offers unlimited bandwidth and storage options.

ChronoSync is a powerful and flexible macOS application designed for comprehensive data management, offering robust solutions for periodic backups, creating bootable drive clones, and synchronizing files and folders across various destinations, including local drives, network volumes, and cloud storage.

Bacula is a robust, open-source backup and recovery software suite designed for enterprise environments. It offers a comprehensive solution for protecting data across heterogeneous networks, supporting various operating systems and storage devices.