# kopia/kopia

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12,612 stars · 606 forks · Go · apache-2.0

## Links

- GitHub: https://github.com/kopia/kopia
- Homepage: https://kopia.io
- awesome-repositories: https://awesome-repositories.com/repository/kopia-kopia.md

## Topics

`backup` `cloud` `deduplication` `encryption` `google-cloud-storage` `hacktoberfest`

## Description

Kopia is a backup utility designed to create encrypted, deduplicated, and compressed snapshots of files and directories. It functions as a client-side tool that secures data locally before transmitting it to various storage targets, ensuring that sensitive information remains protected throughout the backup process.

The system utilizes content-addressable block storage and metadata-driven versioning to identify and remove redundant data across multiple snapshots. By employing a pluggable storage abstraction layer, it supports a wide range of local, network, and cloud-based storage providers, allowing for the centralization of data protection across multiple machines.

To maintain long-term reliability, the software incorporates integrity verification through cryptographic hashing and Merkle-tree structures. These mechanisms detect and prevent data corruption, while asynchronous synchronization processes manage the transfer of blocks to ensure consistency and efficiency in disaster recovery scenarios.

## Tags

### Security & Cryptography

- [Encrypted Backups](https://awesome-repositories.com/f/security-cryptography/encrypted-backups.md) — Creates deduplicated and compressed snapshots of files with end-to-end encryption for secure storage. ([source](https://kopia.io/docs/))
- [Client-Side Encryption](https://awesome-repositories.com/f/security-cryptography/client-side-encryption.md) — Encrypts all data locally using user-provided keys before transmission to ensure privacy.
- [Encrypted Storage Solutions](https://awesome-repositories.com/f/security-cryptography/encrypted-storage-solutions.md) — Captures files and directories into encrypted, deduplicated archives for secure storage. ([source](https://kopia.io/docs/))
- [End-to-End Encryption](https://awesome-repositories.com/f/security-cryptography/privacy-data-protection/data-encryption/end-to-end-encryption.md) — Secures critical files against corruption and unauthorized access using end-to-end encryption.
- [Integrity Verification](https://awesome-repositories.com/f/security-cryptography/privacy-data-protection/data-encryption/end-to-end-encryption/integrity-verification.md) — Protects against file corruption using cryptographic hashing and error correction techniques. ([source](https://kopia.io/docs/))
- [Merkle Tree Utilities](https://awesome-repositories.com/f/security-cryptography/merkle-tree-utilities.md) — Maintains data integrity by validating cryptographic hashes against a Merkle-tree root manifest.

### DevOps & Infrastructure

- [Cloud Backups](https://awesome-repositories.com/f/devops-infrastructure/cloud-backups.md) — Provides a backup utility that synchronizes encrypted data blocks to remote cloud storage providers.
- [Backup Management](https://awesome-repositories.com/f/devops-infrastructure/backup-management.md) — Coordinates backup tasks from multiple client machines into centralized storage repositories. ([source](https://kopia.io/docs/))

### System Administration & Monitoring

- [Deduplication Backup Tools](https://awesome-repositories.com/f/system-administration-monitoring/deduplication-backup-tools.md) — Identifies and removes redundant data across snapshots to optimize space and reduce costs. ([source](https://kopia.io/docs/))

### Software Engineering & Architecture

- [Disaster Recovery Solutions](https://awesome-repositories.com/f/software-engineering-architecture/disaster-recovery-solutions.md) — Centralizes and secures data backups from multiple machines to ensure availability during failure.

### Data & Databases

- [Content-Addressable Storage](https://awesome-repositories.com/f/data-databases/content-addressable-storage.md) — Uses content-addressable block storage to identify and deduplicate unique data chunks.
- [Deduplication](https://awesome-repositories.com/f/data-databases/file-storage-management/deduplication.md) — Reduces storage costs by identifying and removing redundant data blocks across multiple backups.
- [Metadata-Driven Snapshots](https://awesome-repositories.com/f/data-databases/data-snapshotting/periodic-snapshots/metadata-driven-snapshots.md) — Tracks file system states using immutable metadata trees to avoid duplicating unchanged data.
- [Data Storage Optimizers](https://awesome-repositories.com/f/data-databases/data-storage-optimizers.md) — Optimizes storage efficiency by applying compression and deduplication before writing to disk. ([source](https://kopia.io/docs/))
- [Storage Abstraction Layers](https://awesome-repositories.com/f/data-databases/storage-abstraction-layers.md) — Provides a modular interface to support various local, network, and cloud storage providers.