Top Alternatives to Unison

Beyond Compare is a powerful and flexible utility for comparing files and folders. It highlights differences in text, code, images, and binary data, and provides robust tools for merging changes, synchronizing directories, and creating snapshots for archiving.

Resilio Sync is a powerful and flexible peer-to-peer file synchronization and sharing solution designed for individuals, teams, and enterprises. It offers fast and reliable data transfer without relying on a central cloud server, providing enhanced privacy and control over your data.

rsync is a versatile command-line utility designed for efficient file transfer and synchronization. It specializes in incremental transfers, copying only the parts of files that have changed since the last synchronization, making it highly efficient for backups and mirroring.

SyncToy is a free file synchronization tool from Microsoft's PowerToys series, designed for Windows. It offers an intuitive graphical interface to help users synchronize files and folders between different locations on their computer or network drives. Ideal for simple backup and mirroring tasks.

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.

Allway Sync is a robust and reliable file synchronization and backup software designed to keep your data consistent across multiple locations. It intelligently detects changes and propagates them efficiently, ensuring your files are always up-to-date and safely backed up.

IPFS is a peer-to-peer hypermedia protocol designed to make the web faster, safer, and more open. It allows for storage and access to files across a distributed network, rather than relying on centralized servers.

Pulse is a free and secure decentralized file synchronization engine developed by Ind.ie. Designed with privacy and control in mind, it allows users to synchronize files and folders directly between devices without relying on central servers, promoting data ownership and resilience. While discontinued, it represents an important effort towards decentralized file management.

Robocopy (Robust File Copy) is a robust command-line utility designed for efficient and reliable file and directory replication on Windows systems. It offers advanced features beyond standard copy commands, making it ideal for complex backup, synchronization, and migration tasks.

Toucan is a lightweight, portable application designed for advanced users requiring robust data synchronization, backup, and encryption capabilities. Ideal for managing files across various locations with features like scheduled tasks, incremental backups, and built-in encryption.

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.

PureSync is a powerful yet easy-to-use Windows application designed for seamless file synchronization and automated backups. It offers various synchronization modes, including two-way sync and mirroring, supports cloud storage integration, and provides features like scheduling, file versioning, and encryption for data safety and peace of mind.

Qtd Sync is a robust backup and synchronization client and server application designed for reliable data management. It offers comprehensive features like file synchronization, encrypted backups, and support for various storage options including Amazon S3, catering to both personal and business needs.

ViceVersa is a robust file synchronization, backup, and replication software for Windows. It offers comprehensive features for individuals and businesses, including real-time sync, versioning, encryption, and support for various storage options like cloud and FTP.

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.