Kopia
Fast and secure open-source backup/restore tool.
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Use it free
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Self-host it
Run the open-source version on your own infrastructure.
What is Kopia?
Kopia is an open-source backup tool designed to provide secure, efficient, and scalable data protection using cloud storage. It enables users to create encrypted, compressed, and deduplicated backups of files and systems, supporting both command-line interface (CLI) and graphical user interface (GUI) for Windows, macOS, and Linux. The tool addresses the challenge of data loss by offering a reliable solution for individuals and organizations to safeguard critical information. Its architecture prioritizes speed and security, making it suitable for devices ranging from personal laptops to enterprise servers. Kopia’s flexibility allows integration with various cloud storage providers, ensuring users can leverage existing infrastructure while maintaining control over their data. The project emphasizes ease of use through its user-friendly desktop application and command-line tools, catering to both novice and advanced users.
How it works
Kopia is an open-source backup software that focuses on encrypting, compressing, and deduplicating data before storing it in cloud environments. Its primary purpose is to simplify the backup process while ensuring data security and efficiency. The tool is ideal for users who need to protect sensitive information against ransomware, hardware failure, or accidental deletion. By combining encryption with deduplication, Kopia minimizes storage overhead and enhances privacy, making it a viable alternative to traditional backup solutions. Kopia supports cross-platform operation on Windows, macOS, and Linux, with both CLI and GUI options. It integrates with cloud storage providers, allowing backups to be stored in services like Google Cloud Storage. Features include pluggable encryption for data at rest, compression to reduce file sizes, and deduplication to eliminate redundant data.
How to use it
- 1Install Kopia via package managers or binaries for your operating system. 2. Configure cloud storage credentials and select a provider. 3. Define backup policies, including retention rules and encryption settings. 4. Initiate backups through the GUI or CLI commands, specifying source and destination paths. Practical tips include enabling encryption during setup, using deduplication to optimize storage, and scheduling regular backups to ensure data consistency.
What it can do
- backup tool
Use cases
Assumptions and limitations
Assumptions
- source: https://kopia.io/
- license: Apache-2.0 — free to use
- privacy: Self-hosted — you control your data
Limitations
- Limited community support compared to more mature projects like Borg or Duplicity.
- Learning curve for advanced CLI features without prior backup experience.
- No native mobile application for on-the-go backup management.
- Dependent on third-party cloud storage providers for long-term data retention.
- Lack of built-in versioning for individual files beyond retention policies.
Understanding the result
Fast and secure open-source backup/restore tool.
Tool details
- Clearly flagged when a network request is needed.
- No account, no sign-up, and no tracking of your content.
- Powered by (Apache-2.0).
- Built with
- (https://kopia.io/)
- License
- Apache-2.0
- Runs locally
- No — requires a network request
- Verification
- Not yet verified
- Input
- Query
- Output
- Text
Built with https://kopia.io/. OpenToolVault provides the discovery and browser interface while crediting the original project maintainers.
- Built with
- License
- Apache-2.0
Open-source project
OpenToolVault is an independent directory. We are not affiliated with or endorsed by this project.
References
- / — GitHub Repository
Upstream project · GitHub
- Apache-2.0 License
Upstream project
Frequently asked
How does Kopia ensure data security during backups?
Kopia encrypts data at rest using pluggable encryption modules, ensuring sensitive information is protected even if cloud storage is compromised. Users can configure encryption keys locally or via cloud provider mechanisms. Deduplication and compression further enhance security by minimizing data exposure.
How does Kopia handle deduplication across multiple backups?
Kopia uses content-based deduplication, comparing file hashes across backups to identify and eliminate redundant data. This reduces storage requirements while maintaining full recoverability. Deduplication is applied at the chunk level, allowing efficient space optimization without sacrificing data integrity.
How do I restore a single file from a Kopia backup?
Open the Kopia GUI, navigate to the backup repository, and use the search function to locate the file. Right-click the file and select 'Restore' to download it to your desired location. For CLI users, run the 'kopia restore' command with the file path and destination directory.
How does Kopia compare to Borg and Duplicity?
Kopia focuses on simplicity and cloud integration, with a modern GUI and built-in deduplication. Borg excels in large-scale backups with advanced deduplication but lacks a GUI. Duplicity offers strong encryption but is slower and less user-friendly. Kopia balances ease of use with performance, making it better suited for cloud-first workflows.
What should I do if Kopia fails to back up a directory?
Check for permission issues by ensuring the backup user has read access to the source directory. Verify cloud storage credentials and quotas. If the error persists, review Kopia’s logs for specific error codes and consult the community forum for troubleshooting guidance.