The 6 Best Retool Alternatives in 2026 (Internal Tools Builders)
Dušan Jovović
Founder of Tolodora. I hunt for smaller, lesser-known tools that punch above their weight — and I only recommend the ones I'd actually use.
Retool popularized fast low-code internal tools, but a wave of open-source alternatives now offers the same speed with self-hosting and ownership. Here are six Retool alternatives I'd consider in 2026.
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Appsmith
- Pricing
- 9.6/10
- Functionality
- 9.0/10
- Ease of use
- 8.2/10
- Support
- 8.0/10
What I like
A polished open-source low-code platform for internal tools — self-host it and own everything.
Best for
A polished open-source builder.
Appsmith is an open-source low-code platform for building internal tools on your data and APIs. A leading self-hostable Retool alternative.
Budibase
- Pricing
- 9.6/10
- Functionality
- 8.8/10
- Ease of use
- 8.4/10
- Support
- 8.0/10
What I like
Open-source builder for internal apps with its own database option — quick to stand up and self-host.
Best for
Fast open-source internal apps.
Budibase is an open-source platform for building internal tools and apps, with a built-in database option. Great for quickly shipping self-hosted tools.
ToolJet
- Pricing
- 9.6/10
- Functionality
- 8.8/10
- Ease of use
- 8.2/10
- Support
- 8.0/10
What I like
A flexible open-source low-code builder for internal tools, with many data connectors.
Best for
Flexible open-source tooling.
ToolJet is an open-source low-code platform for building internal tools, with broad data connectivity. A capable, self-hostable Retool alternative.
Windmill
- Pricing
- 9.4/10
- Functionality
- 9.2/10
- Ease of use
- 7.8/10
- Support
- 8.0/10
What I like
Builds internal tools and workflows from scripts — open source and powerful for developers.
Best for
Developers wanting scripts plus UIs.
Windmill turns scripts into internal tools, workflows and schedules, open source and self-hostable. The pick for developer-led internal tooling.
Superblocks
- Pricing
- 7.4/10
- Functionality
- 9.2/10
- Ease of use
- 8.2/10
- Support
- 8.4/10
What I like
An enterprise-grade platform for internal apps with strong governance and security.
Best for
Enterprise internal tools.
Superblocks is a low-code platform for internal applications with enterprise governance and security. A strong Retool alternative for larger organizations.
UI Bakery
- Pricing
- 8.6/10
- Functionality
- 8.6/10
- Ease of use
- 8.8/10
- Support
- 8.2/10
What I like
A friendly, visual low-code builder for internal tools that's quick to learn and use.
Best for
A friendly visual builder.
UI Bakery is a visual low-code platform for building internal tools quickly. Approachable and capable, with a gentle learning curve.
Want a polished open-source builder? Appsmith or Budibase. A flexible open-source option? ToolJet. Scripts plus tools? Windmill. An enterprise-grade alternative? Superblocks. A friendly visual builder? UI Bakery. Pick by openness and how much code you want.
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