Best Open Source Alternatives to Bubble

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

Curated by open-source.store · Updated November 2026 · 1 alternatives

Bubble

Proprietary SaaS

PricingFreemium

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Bubble alternatives compared

Open-source alternatives to Bubble, compared by stars, license and platform
Tool		License	Platforms	Self-hosted
Lowdefy	3,018	Apache-2.0	WebDockerLinuxmacOS	Yes	Nov 2026	Visit

Top open-source Bubble alternatives

Lowdefy3,018Apache-2.0

Lowdefy is an open-source alternative to Retool that lets developers build internal tools and database dashboards using declarative YAML configuration.

WebDockerLinuxmacOSWindows

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

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Best Open Source Alternatives to Bubble

Bubble

Bubble alternatives compared

Top open-source Bubble alternatives

The modern standard for Protobuf workflows

Mentoring for backend developers. Consulting for startups.