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[[!meta title="Obnam - backup software"]]

[[!img obnam.svg class="float_right"
   link="https://zakoyan.com/obnam/"
   alt="Obnam logo by Tigran Zakoyan; CC-BY-SA 4.0"]]

[Tutorial](https://gitlab.com/obnam/obnam/-/blob/main/tutorial.md?ref_type=heads) &mdash;
[Documentation](https://doc.obnam.org/) &mdash;
[[Contact]] &mdash;
[[Blog]] &mdash;
[[License]]

Obnam is starting over from scratch. See [blog
post](https://blog.liw.fi/posts/2020/10/16/obnam2_-_a_new_backup_system/).
It is currently not ready to be used, but if you're feeling adventurous, follow
[the tutorial][tutorial] and try it out.

This web site used to be about Obnam1, the original version that was
retired in 2017. All that content has been dropped now. 

**25-word summary of the new architecture:** client splits live data
into chunks, then compresses and encrypts them, and uploads new ones
to smart server via HTTP; server never sees cleartext.

[Subplot]: https://subplot.liw.fi/
[tutorial]: https://gitlab.com/obnam/obnam/-/blob/main/tutorial.md

# News

<div class="newslist">
[[!inline pages="page(blog/*)" 
  limit=5 template=titlepage archive=yes trail=no feeds=no]]
</div>


# Links

* [Source code (gitlab.com)](https://gitlab.com/obnam/obnam) ([mirror](http://git.liw.fi/obnam2))
* Acceptance criteria are documented using [Subplot][], and are on
  [doc.obnam.org](https://doc.obnam.org/).
* [[Contributing]] to Obnam
* [Benchmark results](https://doc.obnam.org/obnam-benchmark-results/)
* [Obnam blog posts by Lars](https://blog.liw.fi/tag/obnam/)
* Other backup software:
  * [Borg](https://www.borgbackup.org/)
  * [Bupstash](https://bupstash.io/)
  * [Kopia](https://kopia.io/)
  * [restic](https://restic.net/)
  * [Snebu](https://www.snebu.com/)
* [Cache Directory Tagging Standard](http://www.bford.info/cachedir/)