People weigh Retool alternatives when per-user pricing gets expensive, they want an open-source or self-hostable option they can run and own, or they find Retool too developer-oriented for their team. Quirks like setValue() being async and transformers not being able to trigger queries also push some teams to look around.
From our builds
A Retool quirk that bites teams: setValue() is async, so reading a component's value on the very next line hands you the old one. It's a frequent cause of the 'why is my data stale' bugs we untangle in inherited Retool apps.
How we picked
Open-source and self-hosting
A top reason to leave Retool is wanting to self-host and own the tool, which only some alternatives allow.
Connector and data support
Retool's strength is connecting to many databases and APIs, so a fair alternative must handle your data sources.
Ease for non-developers
Retool leans developer-first; some teams want something a non-coder can drive.
Pricing model
Per-user pricing is a common complaint, so how each alternative charges is decisive at team scale.
App type (internal tools vs portals)
Retool targets internal apps; if you actually need client-facing portals, a different tool may fit better.
The contenders, ranked
Appsmith
Internal Tools Builder (open-source)Open-source, self-hostable internal-tools builder.
- Best for
- Developers who want a self-hostable, Retool-style tool they fully control.
- Pricing from
- Free (open-source, self-hosted); paid cloud tiers
- Free tier
- Free open-source self-hosting plus a free cloud tier
Pros
- Open-source and freely self-hostable
- Wide database and API connector support
- Drag-and-drop UI with JavaScript everywhere
Cons
- Self-hosting requires setup and maintenance
- Smaller connector library than Retool
- Still developer-oriented
Our verdict: The best open-source, self-hostable Retool replacement.
Budibase
Internal Tools Builder (open-source)Open-source low-code platform for internal apps.
- Best for
- Teams wanting a fast, open-source builder with a built-in database option.
- Pricing from
- Free (open-source, self-hosted); paid tiers
- Free tier
- Free open-source self-hosting
Pros
- Open-source and self-hostable
- Includes its own database plus external connectors
- Quick to build simple internal apps
Cons
- Fewer advanced features than Retool for complex tools
- Smaller ecosystem
- Self-hosting maintenance overhead
Our verdict: Best open-source pick if you want a built-in database too.
Tooljet
Internal Tools Builder (open-source)Open-source low-code for internal tools and workflows.
- Best for
- Developers wanting an open-source builder with workflows and many data sources.
- Pricing from
- Free (open-source, self-hosted); paid cloud
- Free tier
- Free open-source self-hosting
Pros
- Open-source and self-hostable
- Broad data-source and API support
- Includes workflow automation features
Cons
- Younger project than Retool
- Smaller community and docs
- Self-hosting setup required
Our verdict: Best if you want open-source internal tools plus workflows.
Glide
No-Code App Builder (apps from data)Turns spreadsheets and databases into polished apps.
- Best for
- Non-developers building lightweight internal tools on existing data.
- Pricing from
- $19/mo (Explorer, annual)
- Free tier
- Free — unlimited draft apps, up to 25,000 rows, published apps public
Pros
- Far easier for non-developers than Retool
- Polished mobile UI and built-in AI features
- Fast data-to-app workflow
Cons
- Less data/logic power than Retool
- Free-tier apps are public
- Pricing jumps between tiers with row caps
Our verdict: Best if non-developers need to build the tools themselves.
Softr
No-Code App Builder (portals/web apps)No-code portals and web apps on Airtable or Sheets.
- Best for
- Teams building internal tools or client portals on Airtable data.
- Pricing from
- $49/mo (Basic, annual)
- Free tier
- Free — up to 10 app users, 5,000 records
Pros
- Very easy to build portals and internal tools on Airtable/Sheets
- Unlimited internal editors — you bill by external users
- Built-in auth and prebuilt blocks
Cons
- Depends on an external database
- Access control is UX-level, not deep security
- Higher Business tiers get pricey
Our verdict: Best if your internal tool is really a portal on Airtable.
UI Bakery
Internal Tools Builder (low-code)Hosted low-code platform for internal tools.
- Best for
- Teams wanting a hosted, Retool-style builder without self-hosting.
- Pricing from
- Paid plans (free tier available)
- Free tier
- Free tier for small usage
Pros
- Hosted, so no server maintenance
- Retool-like drag-and-drop with data connectors
- Often cheaper at team scale than Retool
Cons
- Not open-source
- Smaller ecosystem than Retool
- Fewer advanced enterprise features
Our verdict: Best hosted low-code option if you don't want to self-host.
Windmill
Internal Tools / Workflows (open-source)Open-source platform to turn scripts into internal apps.
- Best for
- Developer teams who want to build tools and workflows from scripts.
- Pricing from
- Free (open-source, self-hosted); paid cloud
- Free tier
- Free open-source self-hosting
Pros
- Open-source and self-hostable
- Turns TypeScript/Python/SQL scripts into UIs and workflows
- Strong for automation-heavy internal tools
Cons
- More code-centric than Retool's visual builder
- Steeper for non-developers
- Younger ecosystem
Our verdict: Best for script-heavy teams who want code-driven tools.
Compare side by side
| Aspect | Appsmith | Budibase | Tooljet | Glide | Softr | UI Bakery | Windmill |
|---|---|---|---|---|---|---|---|
| Open-source / self-host | Yes | Yes | Yes | No | No | No | Yes |
| Connector breadth | High | Medium | High | Medium | Airtable/Sheets | Medium | Scripts/DBs |
| Ease for non-developers | Medium | Medium | Medium | High | High | Medium | Low |
| Built-in database | No | Yes | No | Yes | External | No | No |
| Pricing model | Free self-host | Free self-host | Free self-host | $19/mo | $49/mo | Per usage | Free self-host |
| Best for | Self-hosted tools | Built-in DB apps | Tools + workflows | Non-dev apps | Airtable portals | Hosted low-code | Script-driven tools |
Swipe the table sideways to see every column.
Quick pick
Short on time? Jump straight to the right choice for your situation.
You want an open-source, self-hosted Retool
Self-hostable, broad connectors and JavaScript everywhere.
You want open-source with a built-in database
Self-hostable with its own database plus external connectors.
Non-developers need to build the tools
The easiest data-to-app builder for internal use.
Your internal tool is a portal on Airtable
Fast portals on Airtable, priced by external users.
You want hosted low-code without self-hosting
Retool-style building, hosted and often cheaper at scale.
How we compare: We ranked these on what Retool leavers ask for most — open-source, self-hostable ownership — then connector breadth, ease for non-developers, pricing model and whether you need internal tools or client portals. All facts are each tool's cheapest paid tier as of 2026, and the winner is conditional on open-source control, ease or developer power. If you'd rather not build and maintain admin panels, RapidDev can build them for you.
Frequently asked questions
What is the best open-source Retool alternative?
Appsmith is the leading open-source, self-hostable choice, with broad database and API connectors and JavaScript throughout. Budibase and Tooljet are strong open-source options too — Budibase adds a built-in database, and Tooljet includes workflow automation. All three let you self-host and own the tool.
Is there a Retool alternative for non-developers?
Yes. Glide and Softr are far easier for non-technical users. Glide turns spreadsheets and databases into polished apps, and Softr builds portals and internal tools on Airtable or Google Sheets. Both trade some of Retool's data and logic power for approachability.
Why do teams look for Retool alternatives?
The most common reasons are per-user pricing that adds up at team scale, wanting an open-source or self-hostable tool they can own, and Retool feeling too developer-oriented. Practical quirks like setValue() being async and transformers not triggering queries also frustrate some builders.
Which Retool alternative is cheapest?
Self-hosting Appsmith, Budibase, Tooljet or Windmill is effectively free apart from your own server costs, which usually beats Retool's per-user pricing at scale. Among hosted tools, Glide starts at $19/mo and UI Bakery often works out cheaper than Retool for larger teams.
Can these tools connect to my database?
Yes. Appsmith and Tooljet have broad connector support for databases (Postgres, MySQL, Mongo) and REST/GraphQL APIs, similar to Retool. Budibase includes its own database plus external connectors, while Glide and Softr focus on spreadsheet-style data sources like Airtable and Sheets.
Should I build internal tools myself or get help?
For straightforward dashboards and CRUD tools, these builders let a small team move fast. For complex, secure, or heavily integrated internal systems, the setup can get involved. If you'd rather not build and maintain it yourself, RapidDev can build internal tools and admin panels for you.
Still weighing your options?
- We build on all of these platforms
- Honest advice on which fits your build
- Fixed price, you own 100% of the code
30-min call. No commitment.
