Zewo by Zewo

Lightweight library for web server applications in Swift on macOS and Linux powered by coroutines.

swiftcoroutinessynchronous-apisserver-side-swiftzewoswiftenvconcurrencyxcodeherokuswiftpmslackbuildpack
Verdict 72/100 health $4.13/mo cheapest, hetzner 2/5 setup difficulty Last release 8.1 years ago

Self-host Zewo on hetzner for $4.13/mo and save approximately $34/year vs Slack.

Health score
72 /100
6-dim composite
Self-hosts from
$4.13 /mo
hetzner · CAX11
Difficulty
2 /5
Docker + read README
GitHub stars
1.8k
87 forks

Health score breakdown

6-dimension composite. See methodology for formula and weights.

activity
80
maturity
100
community
92
security
70
sustainability
65
adoption
27

Adoption signals

Real-world usage data, pulled from each registry. The bigger the numbers, the more battle-tested the project.

SignalValueSource
GitHub stars 1.8k github.com/Zewo/Zewo
GitHub forks 87 github.com/Zewo/Zewo

Release & maintenance

Is this project actively maintained, or about to die? Check the recency of last commit and last release.

Project age10.5 yearssince Nov 2015
Last commit6.1 years agoMar 26, 2020
Releases shipped23last: 8.1 years ago

Self-hosting cost across providers

Detected requirements: 4GB RAM, 40GB disk minimum. Cheapest plan per provider that meets the requirement.

ProviderPlanSpecsMonthly
hetzner CAX11 2c · 4GB · 40GB $4.13 USD Deploy →
vultr VC2 1c · 1GB · 25GB $5 USD Deploy →
linode Nanode 1GB 1c · 1GB · 25GB $5.12 USD Deploy →
digitalocean Basic Regular 1GB 1c · 1GB · 25GB $6 USD Deploy →

What people say on Hacker News

Replaces these paid SaaS

Zewo is one of the open-source alternatives to:

Slack alternatives Heroku alternatives

Ready to self-host Zewo?

Spin up a hetzner CAX11 (4GB RAM, 40GB disk) for $4.13/mo and follow the project's official install docs.

Data last refreshed May 7, 2026.

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Frequently asked questions

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