btrbk vs ZnapZend
A side-by-side comparison of two self-hosted backup & recovery options — licensing, setup difficulty, resource needs, and what each one replaces.
| Feature | btrbk | ZnapZend |
|---|---|---|
| Deploy effort | Read-the-docs project | Read-the-docs project |
| Health score | 78 · Good | 76 · Good |
| Category | Backup & Recovery | Backup & Recovery |
| License | GPL-3.0 | GPL-3.0 |
| Language | Perl | Perl |
| Setup difficulty | Medium | Hard |
| Min. RAM | 64 MB | 128 MB |
| Deployment | bare-metal, binary | bare-metal |
| GitHub stars | ★ 2,155 | ★ 669 |
| First released | 2014 | 2014 |
| Replaces | Time Machine | Time Machine |
What are btrbk and ZnapZend?
btrbk
btrbk is a backup tool for creating and managing snapshots of Btrfs subvolumes and replicating them to local or remote targets. It is designed for incremental, atomic backups driven by a simple configuration file.
- Incremental Btrfs backups
- Remote replication over SSH
- Configurable retention
- Atomic snapshots
ZnapZend
ZnapZend is a ZFS backup tool that automates the creation, retention, and replication of ZFS snapshots. It runs as a daemon and supports compressed transfers over SSH.
- Automated ZFS snapshot retention
- SSH replication
- Runs as a background daemon
btrbk vs ZnapZend: key differences
Both projects are written in Perl. Btrbk is the lighter option, starting around 64 MB of RAM against 128 MB for ZnapZend. Btrbk has the considerably larger community, at 2,155 GitHub stars versus 669.
Why pick each one
Choose btrbk if…
- Released under the GPL-3.0 license
- Active community (2.2k GitHub stars)
- Written in Perl
- Tiny footprint — runs in 64 MB RAM
Watch out for
- Btrfs only
- No graphical interface
Choose ZnapZend if…
- Released under the GPL-3.0 license
- Written in Perl
- Tiny footprint — runs in 128 MB RAM
Frequently asked questions
Is btrbk or ZnapZend better?
btrbk is the stronger all-round pick: it has both the larger community and the simpler medium setup. Consider ZnapZend if its specific feature set fits your needs better.
Are btrbk and ZnapZend free and open-source?
Yes. btrbk is licensed under GPL-3.0 and ZnapZend under GPL-3.0. Both can be self-hosted at no software cost.
Can I run btrbk and ZnapZend with Docker?
btrbk: check the project docs for container support. ZnapZend: check the project docs for container support.
Which is lighter on resources, btrbk or ZnapZend?
btrbk has the smaller minimum footprint at 64 MB of RAM, compared to about 128 MB for ZnapZend. Real-world usage depends on library size, user count, and enabled features.