kopia/kopia
Cross-platform backup tool for Windows, macOS & Linux with fast, incremental backups, client-side end-to-end encryption, compression and data deduplication. CLI and GUI included. observed · 2026-08-28
Health v2 · maintenance only
96/100
- Activity 99
- Release rhythm 89
- Longevity 100
How is this computed?
round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-09-03. Adoption (stars, forks) is never an input.
- gap_med: 7
- age_days: 3910
- days_rel: 79
- days_push: 9
- n_releases_24m: 14
Adoption not part of the score
13968 stars · 712 forks observed · 2026-08-28
What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded
Kopia is a fast, open-source backup and restore tool that creates encrypted, compressed, and deduplicated snapshots of files and directories, storing them in cloud, network, or local repositories. It offers both a CLI and a GUI (KopiaUI), with client-side end-to-end encryption and an optional server mode for centrally managing backups of multiple machines.
Use cases
- back up my files to cloud storage with end-to-end encryption
- create incremental snapshots of directories with deduplication
- restore files from a point-in-time backup snapshot
- back up a laptop or server to S3, B2, Azure, or Google Cloud Storage
- centrally manage backups of multiple machines from a server
- encrypt backups locally before uploading to untrusted storage
When to choose
- you need encrypted, deduplicated, incremental file-level backups across Windows, macOS, and Linux
- you want both a CLI for scripting and a GUI for regular users
- you want to back up to a wide range of cloud providers (S3, B2, Azure, GCS, SFTP, WebDAV, Rclone)
- you need a server mode to manage backups of many machines centrally
When to avoid
- you need full disk-image or bare-metal recovery backups
- you want a simple unencrypted backup without repository/policy concepts
- you need block-level or database-aware hot backups
Facets
application · maturity stable
backup cryptography compression cli gui self-hosted files security cloud-computing privacy cross-platform windows cross-platform cli self-hosted backup-tool deduplication end-to-end-encryption snapshots cloud-storage restore incremental-backup macos linux docker
7 sources
- readme: https://github.com/kopia/kopia · fetched 2026-08-28 · 5f9cfd3a5e31
- homepage: https://kopia.io · fetched 2026-08-29 · 6b02d6e4e407
- site_page: https://kopia.io/docs/features · fetched 2026-08-29 · 010a1e0688b5
- site_page: https://kopia.io/docs/getting-started · fetched 2026-08-29 · 0ac87a7abaee
- site_page: https://kopia.io/docs/installation · fetched 2026-08-29 · a4db448f9356
- site_page: https://kopia.io/docs · fetched 2026-08-29 · 9dfed921c4e1
- site_page: https://kopia.io/docs/privacy-policy · fetched 2026-08-29 · 824cd2479c03
Member repositories
| Repository | Role | Health v2 |
|---|---|---|
| kopia/kopia | main | 96 |
For agents
Data as of 2026-08-30T08:39:29.467469+00:00 · Report a problem