BorgBackup vs Comet Backup
BorgBackup
borgbackup.org
Comet Backup
cometbackup.comSide by side
| Figure | BorgBackup | Comet Backup |
|---|---|---|
| Price from | Free | $19/mo |
| Free plan | Yes | — |
| Free trial | — | Yes |
| Open source | — | — |
| Web | — | Yes |
| Windows | Yes | Yes |
| macOS | Yes | Yes |
| Linux | Yes | Yes |
| API | — | Yes |
| Self-hosted | Yes | Yes |
| Plans published | 1 | 10 |
| Spec score · NAS Backup Software | 8.4 (#16) | 9.1 (#4) |
| Spec score · Backup software | 8.1 (#56) | 9.3 (#3) |
| Backup scope | mixed | The feature comparison lists workstation, server, NAS, virtual-environment, SaaS, database, file-and-folder and system-state backup options. |
| Computer backup | Yes | Yes |
| Deduplication | Content-defined chunking stores each new chunk once, including across files, backups, and machines sharing a repository. | GetApp describes client-side chunking and deduplication that avoids full re-uploads after the first backup. |
| Encryption | Borg supports client-side 256-bit AES encryption and verifies data integrity and authenticity with HMAC-SHA256. | Comet says data is encrypted before storage, during transfer and at rest, using AES-256-CTR with Poly1305 authentication. |
| Founded | 2015 | The company states that Comet Backup launched in 2017. |
| Free plan | Yes | No |
| Integrations | The project lists BorgBase repository hosting, Hetzner Storage Box with Borg support, and rsync.net cloud storage with Borg support. | Official integrations include billing and CRM tools such as WHMCS, HostBill, MyClient and Figaro, plus monitoring tools including PRTG, Prometheus, Collectd, Syncro and NinjaOne. |
| Platforms | The documentation lists binaries for Linux, macOS, FreeBSD, OpenBSD, and NetBSD; Cygwin and Windows Subsystem for Linux are listed with experimental limitations. | web,windows,macos,linux,self_hosted |
| Restore modes | file | mixed |
| Server backup | Yes | Yes |
Plans
Comet Backup
- Starter$19 a month
- Growth$49 a month
- Professional$49 a month
- Advanced$99 a month
- EnterprisePrice not published
- Starter$19 a month
- Growth$49 a month
- Professional$49 a month
- Advanced$99 a month
- EnterprisePriced on request
In their own words
BorgBackup
BorgBackup is free, open-source backup software for computers and servers on Linux, macOS and Windows. It uses content-defined chunking so repeated chunks are stored once, including across files, backups and machines sharing a repository. Optional compression is available with lz4, zstd, zlib and lzma. Client-side 256-bit AES encryption protects backups, while HMAC-SHA256 verifies data integrity and authenticity. Backups can be stored on remote hosts over SSH. Archives can be mounted as user-space file systems for interactive browsing and file restores. Listed repository and storage options include BorgBase, Hetzner Storage Box and rsync.net. Community help is available through documentation, the issue tracker, IRC, Matrix and a mailing list; commercial consulting, support and development are also listed. BorgBackup is licensed under BSD 3-clause, and its documentation says security and functionality can be independently audited. The site identifies version 1.4.5 as stable; the 2.0 beta remains in testing and should not be used in production. Major-version changes may repeatedly break compatibility.
Comet Backup
Comet Backup has no write-up on Specifiction yet; its figures are above.