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Cachix free for open source

What Cachix gives open source projects, who qualifies, and how to apply. 1 verified offer, last checked 2026-09-07.
FOS-0026 ACTIVE verified 2026-09-07

Cachix

Cachix Nix binary cache (open source tier)
storageCI/CD
What you get
Free Nix binary cache with a 5 GB storage limit (compressed) for open source projects, plus 20 Cachix Deploy agents.
Applies to
the project , not individual maintainers
Requirements
no stated requirements
How to apply
Sign up on cachix.org; the free open source tier is provisioned on signup for OSS use.
Provenance
Confirmed against cachix.org/pricing on 2026-09-07, matched anchor “free 5 GB limit for open source projects”.
Open program page ↗Check your repo →

Verified 2026-09-07. Details changed? Fix it on GitHub. Not sure you qualify? Match your repo against all 176 offers, or browse storage, CI/CD.