Best Open Source Alternatives to Fly.io

Compare the best free and open-source alternatives to Fly.io — self-hosted and desktop replacements you fully control, ranked by GitHub stars, license and platform support.

Curated by open-source.store · Updated August 2026 · 3 alternatives

Fly.io

Proprietary SaaS

PricingFreemium

Platformsweb

WebsiteVisit site

Fly.io alternatives compared

Open-source alternatives to Fly.io, compared by stars, license and platform
Tool		License	Platforms	Self-hosted
Coolify	59,958	Apache-2.0	LinuxDocker	Yes	Aug 2026	Visit
Dokku	32,075	MIT	LinuxDocker	Yes	Aug 2026	Visit
CapRover	15,112	Apache-2.0	LinuxDocker	Yes	Jul 2026	Visit

Top open-source Fly.io alternatives

Coolify59,958Apache-2.0

Self-hosted Heroku and Netlify alternative.

LinuxDocker

vs Fly.io: a free, open-source option you fully control, licensed Apache-2.0.

Visit Details

Dokku32,075MIT

Docker-powered PaaS that helps build and manage apps.

LinuxDocker

vs Fly.io: a free, open-source option you fully control, licensed MIT.

Visit Details

CapRover15,112Apache-2.0

Easy self-hosted PaaS manager.

LinuxDocker

vs Fly.io: a free, open-source option you fully control, licensed Apache-2.0.

Visit Details