A high-performance, simple backup tool written in Go - designed as a modern alternative to Duplicity.

Duplicity is reliable but slow (Python-based, single-threaded)
Restic is fast but complex (snapshot-based, steep learning curve)
GoSync aims to be fast AND simple (Go-based, file-path oriented)

• 10-50x faster than Duplicity through Go's concurrency and performance
• Drop-in replacement with familiar CLI interface
• Simple file-path based restore (no snapshot IDs or repository concepts)
• Modern cloud integration with progress bars and resumption
• Single binary deployment with no dependencies

# Simple backup syntax (like Duplicity)
GoSync /home/user s3://mybucket/backup
GoSync /important/data file:///backup/local

# Incremental backups by default
GoSync --full /home/user s3://mybucket/backup

# Restore everything
GoSync --restore s3://mybucket/backup /home/user

# Restore specific file (intuitive paths)
GoSync --restore-file documents/important.txt s3://mybucket/backup /tmp/

# List backup contents
GoSync --list s3://mybucket/backup

# Progress and resumption
GoSync --progress --resume-on-failure /data s3://bucket

# Flexible exclusions
GoSync --exclude-patterns "*.tmp,.git,node_modules" /project s3://bucket

# Dry run
GoSync --dry-run /home/user s3://bucket

• Concurrent chunk processing using goroutines
• Parallel uploads/downloads to cloud storage
• Efficient deduplication with rolling hash algorithms
• Memory-mapped file I/O for large files

• Amazon S3 and S3-compatible (MinIO, DigitalOcean Spaces)
• Google Cloud Storage
• Azure Blob Storage
• Local filesystem and network drives
• SFTP/SSH remote servers

• AES-256 encryption with user-provided passwords
• GPG integration for key management
• Secure key derivation (PBKDF2/Argon2)
• Integrity verification with cryptographic checksums

• Basic backup/restore with local storage
• File-level incremental backups
• Simple AES encryption
• Duplicity-compatible CLI interface

• S3 backend implementation
• Google Cloud Storage support
• Progress bars and resumption
• Compression (zstd/gzip)

• GPG encryption compatibility
• Multiple storage backends
• Backup verification and repair
• Configuration file support

• Backup scheduling daemon
• Web UI for management
• Monitoring and alerting
• Backup retention policies

• Performance: 10-50x faster than Python for I/O operations
• Concurrency: Built-in goroutines for parallel processing
• Deployment: Single binary, no dependencies
• Cloud APIs: Excellent SDK support for all major providers
• Memory efficiency: Better garbage collection than Python
• Cross-platform: Easy compilation for all platforms

• Existing Duplicity users frustrated with performance
• System administrators wanting reliable, fast backups
• Developers needing simple CI/CD backup integration
• Small businesses requiring efficient data protection
• Power users who find Restic overly complex

# Install
curl -sSL https://get.GoSync.dev | sh

# First backup
GoSync --encrypt-password mysecret /home/user s3://mybucket/backup

# Daily incremental
GoSync /home/user s3://mybucket/backup

# Restore when needed
GoSync --restore s3://mybucket/backup /home/user

• Storage: AWS SDK, Google Cloud SDK, Azure SDK
• Encryption: Go crypto/aes, golang.org/x/crypto
• Compression: klauspost/compress (zstd)
• Hashing: Rolling hash for deduplication
• CLI: spf13/cobra for command interface

• Backup speed: >100MB/s on modern hardware
• Memory usage: <512MB for large datasets
• CPU efficiency: Utilize all available cores
• Network optimization: Concurrent uploads with retry logic