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PostalvsZero to JupyterHub with Kubernetes

Two self-hosted projects, compared on the numbers selfhost.directory tracks live: score, popularity, release cadence and setup effort.

PostalZero to JupyterHub with Kubernetes
Score72/10064/100
Rank in category#3 of 16 in Mail Server#4 of 11 in Container Orchestration
GitHub stars16 8981 725
Stars, last 30 days+74—
Stable releases, 12 months39
Latest release3.3.7 · 3 Jun 20264.4.4 · 20 Oct 2026
SetupAdvancedAdvanced
Official Docker imageYesYes
LicenseMITOther
Main languageRubyPython

Which one should you pick?

Postal scores 72/100 against 64/100 for Zero to JupyterHub with Kubernetes, so it is the safer default.

Zero to JupyterHub with Kubernetes ships more often: 9 stable releases in the past year, against 3 for Postal.

Postal is growing faster right now (+74 stars in 30 days).

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