Developer Tools — Updated August 2026

1 best Retool alternatives in 2026

Tools worth moving to, plus 1 developer tools startups from our own directory.

Tool	Best for	Cost
Appsmith	Teams that want the closest open-source equivalent to Retool	Free
Budibase	Fast CRUD apps and internal workflows without much code	Free
ToolJet	Teams wanting a modern open-source builder with broad connectors	Free
Windmill	Developer teams that prefer writing scripts to dragging widgets	Free

Retool is the tool most companies reach for when engineering time is too expensive to spend on admin panels, and it's good at that job. The catch is the pricing model: per-user, per-month costs that turn a convenient dashboard into a real line item once support and ops teams pile in — and your internal data flows through a closed platform unless you pay for self-hosting. This is one category where the open-source alternatives are excellent, and every pick below can run on your own infrastructure for free.

💡Why founders are looking for Retool alternatives

•Per-seat pricing punishes success — The better your internal tool, the more colleagues use it — and every viewer is a paid seat. Self-hosted open-source alternatives break that equation.
•Your data, their cloud — Internal tools touch production databases and customer records. Running the builder on your own infrastructure is a materially smaller attack surface.
•Lock-in grows with every app — Apps built in a proprietary builder stay there. Open-source platforms let you keep the apps if you stop paying — or fork the whole thing.

Every Retool alternative, in detail

Appsmith

FreeOpen sourceSelf-host

Best for: Teams that want the closest open-source equivalent to Retool

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The most direct open-source Retool replacement: drag-and-drop widgets, JavaScript everywhere, and connectors for the usual databases and APIs. Self-host the whole platform for free, or pay for their cloud and business features.

Free open source · paid cloud and business tiers

Pros

✓Feature set closest to Retool
✓Free unlimited self-hosting
✓Active open-source community

Cons

×UI polish trails Retool
×Fewer prebuilt integrations

Budibase

FreeOpen sourceSelf-host

Best for: Fast CRUD apps and internal workflows without much code

Visit ↗

Optimized for speed: point it at a database or use its built-in one, and a working CRUD app with forms and automations exists in minutes. Less of a blank canvas than Retool, which is exactly why simple tools ship faster on it.

Free open source · paid tiers

Pros

✓Fastest path to a working internal app
✓Built-in database and automations
✓Free self-hosting

Cons

×Less flexible for complex, code-heavy apps
×Smaller widget library

ToolJet

FreeOpen sourceSelf-host

Best for: Teams wanting a modern open-source builder with broad connectors

Visit ↗

A newer open-source entrant that has grown fast, with a wide connector catalog and a pleasant drag-and-drop builder. Worth evaluating alongside Appsmith — some teams prefer its editor model.

Free open source · paid cloud

Pros

✓Wide range of data-source connectors
✓Modern, approachable builder
✓Free self-hosting

Cons

×Younger project with occasional rough edges
×Smaller community than Appsmith

Windmill

FreeOpen sourceSelf-host

Best for: Developer teams that prefer writing scripts to dragging widgets

Visit ↗

Flips the model: write Python or TypeScript functions and Windmill turns them into UIs, scheduled jobs, and approval workflows. For engineering-led teams, keeping internal tools in code — reviewable, versioned, testable — beats a visual builder.

Free open source · paid cloud tiers

Pros

✓Internal tools as real, versioned code
✓Handles scripts, workflows, and UIs in one platform
✓Strong performance and self-host story

Cons

×Not aimed at non-technical builders
×UI builder is younger than the scripting core

Indie Retool alternatives from the Tiny Startups community

1 indie developer tools startups from our community of 20,000+ founders, ranked by upvotes.

Databerry

Developer Tools

Track all your business data in a single dashboard

Visit site ↗View startup →

Frequently asked questions about Retool alternatives

What is the best free alternative to Retool?

Check the pricing line on each card above — free tiers and free trials are listed where they exist. Several of the indie startups on this page also run free or freemium plans aimed at solo founders and small teams.

How do I choose between these Retool alternatives?

Start with the "Best for" line on each card — it names the situation where that tool wins. Then check the pricing against your team size, and use the pros and cons to rule tools out. If two still look close, most offer a free tier or trial: run your real workflow through both for a week.

Is there an open-source alternative to Retool?

Yes — alternatives that are open source or self-hostable carry a badge on their card above, so you can spot them at a glance.

Last reviewed: August 2026. SaaS pricing and features change quickly — verify against the vendor sites before quoting.

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